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-rw-r--r--builtin/clone.c1400
1 files changed, 1400 insertions, 0 deletions
diff --git a/builtin/clone.c b/builtin/clone.c
new file mode 100644
index 0000000..3c2ae31
--- /dev/null
+++ b/builtin/clone.c
@@ -0,0 +1,1400 @@
+/*
+ * Builtin "git clone"
+ *
+ * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
+ * 2008 Daniel Barkalow <barkalow@iabervon.org>
+ * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
+ *
+ * Clone a repository into a different directory that does not yet exist.
+ */
+
+#define USE_THE_INDEX_VARIABLE
+#include "builtin.h"
+#include "config.h"
+#include "lockfile.h"
+#include "parse-options.h"
+#include "fetch-pack.h"
+#include "refs.h"
+#include "refspec.h"
+#include "object-store.h"
+#include "tree.h"
+#include "tree-walk.h"
+#include "unpack-trees.h"
+#include "transport.h"
+#include "strbuf.h"
+#include "dir.h"
+#include "dir-iterator.h"
+#include "iterator.h"
+#include "sigchain.h"
+#include "branch.h"
+#include "remote.h"
+#include "run-command.h"
+#include "connected.h"
+#include "packfile.h"
+#include "list-objects-filter-options.h"
+#include "hook.h"
+#include "bundle.h"
+#include "bundle-uri.h"
+
+/*
+ * Overall FIXMEs:
+ * - respect DB_ENVIRONMENT for .git/objects.
+ *
+ * Implementation notes:
+ * - dropping use-separate-remote and no-separate-remote compatibility
+ *
+ */
+static const char * const builtin_clone_usage[] = {
+ N_("git clone [<options>] [--] <repo> [<dir>]"),
+ NULL
+};
+
+static int option_no_checkout, option_bare, option_mirror, option_single_branch = -1;
+static int option_local = -1, option_no_hardlinks, option_shared;
+static int option_no_tags;
+static int option_shallow_submodules;
+static int option_reject_shallow = -1; /* unspecified */
+static int config_reject_shallow = -1; /* unspecified */
+static int deepen;
+static char *option_template, *option_depth, *option_since;
+static char *option_origin = NULL;
+static char *remote_name = NULL;
+static char *option_branch = NULL;
+static struct string_list option_not = STRING_LIST_INIT_NODUP;
+static const char *real_git_dir;
+static char *option_upload_pack = "git-upload-pack";
+static int option_verbosity;
+static int option_progress = -1;
+static int option_sparse_checkout;
+static enum transport_family family;
+static struct string_list option_config = STRING_LIST_INIT_NODUP;
+static struct string_list option_required_reference = STRING_LIST_INIT_NODUP;
+static struct string_list option_optional_reference = STRING_LIST_INIT_NODUP;
+static int option_dissociate;
+static int max_jobs = -1;
+static struct string_list option_recurse_submodules = STRING_LIST_INIT_NODUP;
+static struct list_objects_filter_options filter_options = LIST_OBJECTS_FILTER_INIT;
+static int option_filter_submodules = -1; /* unspecified */
+static int config_filter_submodules = -1; /* unspecified */
+static struct string_list server_options = STRING_LIST_INIT_NODUP;
+static int option_remote_submodules;
+static const char *bundle_uri;
+
+static int recurse_submodules_cb(const struct option *opt,
+ const char *arg, int unset)
+{
+ if (unset)
+ string_list_clear((struct string_list *)opt->value, 0);
+ else if (arg)
+ string_list_append((struct string_list *)opt->value, arg);
+ else
+ string_list_append((struct string_list *)opt->value,
+ (const char *)opt->defval);
+
+ return 0;
+}
+
+static struct option builtin_clone_options[] = {
+ OPT__VERBOSITY(&option_verbosity),
+ OPT_BOOL(0, "progress", &option_progress,
+ N_("force progress reporting")),
+ OPT_BOOL(0, "reject-shallow", &option_reject_shallow,
+ N_("don't clone shallow repository")),
+ OPT_BOOL('n', "no-checkout", &option_no_checkout,
+ N_("don't create a checkout")),
+ OPT_BOOL(0, "bare", &option_bare, N_("create a bare repository")),
+ OPT_HIDDEN_BOOL(0, "naked", &option_bare,
+ N_("create a bare repository")),
+ OPT_BOOL(0, "mirror", &option_mirror,
+ N_("create a mirror repository (implies bare)")),
+ OPT_BOOL('l', "local", &option_local,
+ N_("to clone from a local repository")),
+ OPT_BOOL(0, "no-hardlinks", &option_no_hardlinks,
+ N_("don't use local hardlinks, always copy")),
+ OPT_BOOL('s', "shared", &option_shared,
+ N_("setup as shared repository")),
+ { OPTION_CALLBACK, 0, "recurse-submodules", &option_recurse_submodules,
+ N_("pathspec"), N_("initialize submodules in the clone"),
+ PARSE_OPT_OPTARG, recurse_submodules_cb, (intptr_t)"." },
+ OPT_ALIAS(0, "recursive", "recurse-submodules"),
+ OPT_INTEGER('j', "jobs", &max_jobs,
+ N_("number of submodules cloned in parallel")),
+ OPT_STRING(0, "template", &option_template, N_("template-directory"),
+ N_("directory from which templates will be used")),
+ OPT_STRING_LIST(0, "reference", &option_required_reference, N_("repo"),
+ N_("reference repository")),
+ OPT_STRING_LIST(0, "reference-if-able", &option_optional_reference,
+ N_("repo"), N_("reference repository")),
+ OPT_BOOL(0, "dissociate", &option_dissociate,
+ N_("use --reference only while cloning")),
+ OPT_STRING('o', "origin", &option_origin, N_("name"),
+ N_("use <name> instead of 'origin' to track upstream")),
+ OPT_STRING('b', "branch", &option_branch, N_("branch"),
+ N_("checkout <branch> instead of the remote's HEAD")),
+ OPT_STRING('u', "upload-pack", &option_upload_pack, N_("path"),
+ N_("path to git-upload-pack on the remote")),
+ OPT_STRING(0, "depth", &option_depth, N_("depth"),
+ N_("create a shallow clone of that depth")),
+ OPT_STRING(0, "shallow-since", &option_since, N_("time"),
+ N_("create a shallow clone since a specific time")),
+ OPT_STRING_LIST(0, "shallow-exclude", &option_not, N_("revision"),
+ N_("deepen history of shallow clone, excluding rev")),
+ OPT_BOOL(0, "single-branch", &option_single_branch,
+ N_("clone only one branch, HEAD or --branch")),
+ OPT_BOOL(0, "no-tags", &option_no_tags,
+ N_("don't clone any tags, and make later fetches not to follow them")),
+ OPT_BOOL(0, "shallow-submodules", &option_shallow_submodules,
+ N_("any cloned submodules will be shallow")),
+ OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"),
+ N_("separate git dir from working tree")),
+ OPT_STRING_LIST('c', "config", &option_config, N_("key=value"),
+ N_("set config inside the new repository")),
+ OPT_STRING_LIST(0, "server-option", &server_options,
+ N_("server-specific"), N_("option to transmit")),
+ OPT_SET_INT('4', "ipv4", &family, N_("use IPv4 addresses only"),
+ TRANSPORT_FAMILY_IPV4),
+ OPT_SET_INT('6', "ipv6", &family, N_("use IPv6 addresses only"),
+ TRANSPORT_FAMILY_IPV6),
+ OPT_PARSE_LIST_OBJECTS_FILTER(&filter_options),
+ OPT_BOOL(0, "also-filter-submodules", &option_filter_submodules,
+ N_("apply partial clone filters to submodules")),
+ OPT_BOOL(0, "remote-submodules", &option_remote_submodules,
+ N_("any cloned submodules will use their remote-tracking branch")),
+ OPT_BOOL(0, "sparse", &option_sparse_checkout,
+ N_("initialize sparse-checkout file to include only files at root")),
+ OPT_STRING(0, "bundle-uri", &bundle_uri,
+ N_("uri"), N_("a URI for downloading bundles before fetching from origin remote")),
+ OPT_END()
+};
+
+static const char *get_repo_path_1(struct strbuf *path, int *is_bundle)
+{
+ static char *suffix[] = { "/.git", "", ".git/.git", ".git" };
+ static char *bundle_suffix[] = { ".bundle", "" };
+ size_t baselen = path->len;
+ struct stat st;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(suffix); i++) {
+ strbuf_setlen(path, baselen);
+ strbuf_addstr(path, suffix[i]);
+ if (stat(path->buf, &st))
+ continue;
+ if (S_ISDIR(st.st_mode) && is_git_directory(path->buf)) {
+ *is_bundle = 0;
+ return path->buf;
+ } else if (S_ISREG(st.st_mode) && st.st_size > 8) {
+ /* Is it a "gitfile"? */
+ char signature[8];
+ const char *dst;
+ int len, fd = open(path->buf, O_RDONLY);
+ if (fd < 0)
+ continue;
+ len = read_in_full(fd, signature, 8);
+ close(fd);
+ if (len != 8 || strncmp(signature, "gitdir: ", 8))
+ continue;
+ dst = read_gitfile(path->buf);
+ if (dst) {
+ *is_bundle = 0;
+ return dst;
+ }
+ }
+ }
+
+ for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) {
+ strbuf_setlen(path, baselen);
+ strbuf_addstr(path, bundle_suffix[i]);
+ if (!stat(path->buf, &st) && S_ISREG(st.st_mode)) {
+ *is_bundle = 1;
+ return path->buf;
+ }
+ }
+
+ return NULL;
+}
+
+static char *get_repo_path(const char *repo, int *is_bundle)
+{
+ struct strbuf path = STRBUF_INIT;
+ const char *raw;
+ char *canon;
+
+ strbuf_addstr(&path, repo);
+ raw = get_repo_path_1(&path, is_bundle);
+ canon = raw ? absolute_pathdup(raw) : NULL;
+ strbuf_release(&path);
+ return canon;
+}
+
+static int add_one_reference(struct string_list_item *item, void *cb_data)
+{
+ struct strbuf err = STRBUF_INIT;
+ int *required = cb_data;
+ char *ref_git = compute_alternate_path(item->string, &err);
+
+ if (!ref_git) {
+ if (*required)
+ die("%s", err.buf);
+ else
+ fprintf(stderr,
+ _("info: Could not add alternate for '%s': %s\n"),
+ item->string, err.buf);
+ } else {
+ struct strbuf sb = STRBUF_INIT;
+ strbuf_addf(&sb, "%s/objects", ref_git);
+ add_to_alternates_file(sb.buf);
+ strbuf_release(&sb);
+ }
+
+ strbuf_release(&err);
+ free(ref_git);
+ return 0;
+}
+
+static void setup_reference(void)
+{
+ int required = 1;
+ for_each_string_list(&option_required_reference,
+ add_one_reference, &required);
+ required = 0;
+ for_each_string_list(&option_optional_reference,
+ add_one_reference, &required);
+}
+
+static void copy_alternates(struct strbuf *src, const char *src_repo)
+{
+ /*
+ * Read from the source objects/info/alternates file
+ * and copy the entries to corresponding file in the
+ * destination repository with add_to_alternates_file().
+ * Both src and dst have "$path/objects/info/alternates".
+ *
+ * Instead of copying bit-for-bit from the original,
+ * we need to append to existing one so that the already
+ * created entry via "clone -s" is not lost, and also
+ * to turn entries with paths relative to the original
+ * absolute, so that they can be used in the new repository.
+ */
+ FILE *in = xfopen(src->buf, "r");
+ struct strbuf line = STRBUF_INIT;
+
+ while (strbuf_getline(&line, in) != EOF) {
+ char *abs_path;
+ if (!line.len || line.buf[0] == '#')
+ continue;
+ if (is_absolute_path(line.buf)) {
+ add_to_alternates_file(line.buf);
+ continue;
+ }
+ abs_path = mkpathdup("%s/objects/%s", src_repo, line.buf);
+ if (!normalize_path_copy(abs_path, abs_path))
+ add_to_alternates_file(abs_path);
+ else
+ warning("skipping invalid relative alternate: %s/%s",
+ src_repo, line.buf);
+ free(abs_path);
+ }
+ strbuf_release(&line);
+ fclose(in);
+}
+
+static void mkdir_if_missing(const char *pathname, mode_t mode)
+{
+ struct stat st;
+
+ if (!mkdir(pathname, mode))
+ return;
+
+ if (errno != EEXIST)
+ die_errno(_("failed to create directory '%s'"), pathname);
+ else if (stat(pathname, &st))
+ die_errno(_("failed to stat '%s'"), pathname);
+ else if (!S_ISDIR(st.st_mode))
+ die(_("%s exists and is not a directory"), pathname);
+}
+
+static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest,
+ const char *src_repo)
+{
+ int src_len, dest_len;
+ struct dir_iterator *iter;
+ int iter_status;
+ struct strbuf realpath = STRBUF_INIT;
+
+ mkdir_if_missing(dest->buf, 0777);
+
+ iter = dir_iterator_begin(src->buf, DIR_ITERATOR_PEDANTIC);
+
+ if (!iter)
+ die_errno(_("failed to start iterator over '%s'"), src->buf);
+
+ strbuf_addch(src, '/');
+ src_len = src->len;
+ strbuf_addch(dest, '/');
+ dest_len = dest->len;
+
+ while ((iter_status = dir_iterator_advance(iter)) == ITER_OK) {
+ strbuf_setlen(src, src_len);
+ strbuf_addstr(src, iter->relative_path);
+ strbuf_setlen(dest, dest_len);
+ strbuf_addstr(dest, iter->relative_path);
+
+ if (S_ISLNK(iter->st.st_mode))
+ die(_("symlink '%s' exists, refusing to clone with --local"),
+ iter->relative_path);
+
+ if (S_ISDIR(iter->st.st_mode)) {
+ mkdir_if_missing(dest->buf, 0777);
+ continue;
+ }
+
+ /* Files that cannot be copied bit-for-bit... */
+ if (!fspathcmp(iter->relative_path, "info/alternates")) {
+ copy_alternates(src, src_repo);
+ continue;
+ }
+
+ if (unlink(dest->buf) && errno != ENOENT)
+ die_errno(_("failed to unlink '%s'"), dest->buf);
+ if (!option_no_hardlinks) {
+ strbuf_realpath(&realpath, src->buf, 1);
+ if (!link(realpath.buf, dest->buf))
+ continue;
+ if (option_local > 0)
+ die_errno(_("failed to create link '%s'"), dest->buf);
+ option_no_hardlinks = 1;
+ }
+ if (copy_file_with_time(dest->buf, src->buf, 0666))
+ die_errno(_("failed to copy file to '%s'"), dest->buf);
+ }
+
+ if (iter_status != ITER_DONE) {
+ strbuf_setlen(src, src_len);
+ die(_("failed to iterate over '%s'"), src->buf);
+ }
+
+ strbuf_release(&realpath);
+}
+
+static void clone_local(const char *src_repo, const char *dest_repo)
+{
+ if (option_shared) {
+ struct strbuf alt = STRBUF_INIT;
+ get_common_dir(&alt, src_repo);
+ strbuf_addstr(&alt, "/objects");
+ add_to_alternates_file(alt.buf);
+ strbuf_release(&alt);
+ } else {
+ struct strbuf src = STRBUF_INIT;
+ struct strbuf dest = STRBUF_INIT;
+ get_common_dir(&src, src_repo);
+ get_common_dir(&dest, dest_repo);
+ strbuf_addstr(&src, "/objects");
+ strbuf_addstr(&dest, "/objects");
+ copy_or_link_directory(&src, &dest, src_repo);
+ strbuf_release(&src);
+ strbuf_release(&dest);
+ }
+
+ if (0 <= option_verbosity)
+ fprintf(stderr, _("done.\n"));
+}
+
+static const char *junk_work_tree;
+static int junk_work_tree_flags;
+static const char *junk_git_dir;
+static int junk_git_dir_flags;
+static enum {
+ JUNK_LEAVE_NONE,
+ JUNK_LEAVE_REPO,
+ JUNK_LEAVE_ALL
+} junk_mode = JUNK_LEAVE_NONE;
+
+static const char junk_leave_repo_msg[] =
+N_("Clone succeeded, but checkout failed.\n"
+ "You can inspect what was checked out with 'git status'\n"
+ "and retry with 'git restore --source=HEAD :/'\n");
+
+static void remove_junk(void)
+{
+ struct strbuf sb = STRBUF_INIT;
+
+ switch (junk_mode) {
+ case JUNK_LEAVE_REPO:
+ warning("%s", _(junk_leave_repo_msg));
+ /* fall-through */
+ case JUNK_LEAVE_ALL:
+ return;
+ default:
+ /* proceed to removal */
+ break;
+ }
+
+ if (junk_git_dir) {
+ strbuf_addstr(&sb, junk_git_dir);
+ remove_dir_recursively(&sb, junk_git_dir_flags);
+ strbuf_reset(&sb);
+ }
+ if (junk_work_tree) {
+ strbuf_addstr(&sb, junk_work_tree);
+ remove_dir_recursively(&sb, junk_work_tree_flags);
+ }
+ strbuf_release(&sb);
+}
+
+static void remove_junk_on_signal(int signo)
+{
+ remove_junk();
+ sigchain_pop(signo);
+ raise(signo);
+}
+
+static struct ref *find_remote_branch(const struct ref *refs, const char *branch)
+{
+ struct ref *ref;
+ struct strbuf head = STRBUF_INIT;
+ strbuf_addstr(&head, "refs/heads/");
+ strbuf_addstr(&head, branch);
+ ref = find_ref_by_name(refs, head.buf);
+ strbuf_release(&head);
+
+ if (ref)
+ return ref;
+
+ strbuf_addstr(&head, "refs/tags/");
+ strbuf_addstr(&head, branch);
+ ref = find_ref_by_name(refs, head.buf);
+ strbuf_release(&head);
+
+ return ref;
+}
+
+static struct ref *wanted_peer_refs(const struct ref *refs,
+ struct refspec *refspec)
+{
+ struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD"));
+ struct ref *local_refs = head;
+ struct ref **tail = head ? &head->next : &local_refs;
+
+ if (option_single_branch) {
+ struct ref *remote_head = NULL;
+
+ if (!option_branch)
+ remote_head = guess_remote_head(head, refs, 0);
+ else {
+ local_refs = NULL;
+ tail = &local_refs;
+ remote_head = copy_ref(find_remote_branch(refs, option_branch));
+ }
+
+ if (!remote_head && option_branch)
+ warning(_("Could not find remote branch %s to clone."),
+ option_branch);
+ else {
+ int i;
+ for (i = 0; i < refspec->nr; i++)
+ get_fetch_map(remote_head, &refspec->items[i],
+ &tail, 0);
+
+ /* if --branch=tag, pull the requested tag explicitly */
+ get_fetch_map(remote_head, tag_refspec, &tail, 0);
+ }
+ free_refs(remote_head);
+ } else {
+ int i;
+ for (i = 0; i < refspec->nr; i++)
+ get_fetch_map(refs, &refspec->items[i], &tail, 0);
+ }
+
+ if (!option_mirror && !option_single_branch && !option_no_tags)
+ get_fetch_map(refs, tag_refspec, &tail, 0);
+
+ return local_refs;
+}
+
+static void write_remote_refs(const struct ref *local_refs)
+{
+ const struct ref *r;
+
+ struct ref_transaction *t;
+ struct strbuf err = STRBUF_INIT;
+
+ t = ref_transaction_begin(&err);
+ if (!t)
+ die("%s", err.buf);
+
+ for (r = local_refs; r; r = r->next) {
+ if (!r->peer_ref)
+ continue;
+ if (ref_transaction_create(t, r->peer_ref->name, &r->old_oid,
+ 0, NULL, &err))
+ die("%s", err.buf);
+ }
+
+ if (initial_ref_transaction_commit(t, &err))
+ die("%s", err.buf);
+
+ strbuf_release(&err);
+ ref_transaction_free(t);
+}
+
+static void write_followtags(const struct ref *refs, const char *msg)
+{
+ const struct ref *ref;
+ for (ref = refs; ref; ref = ref->next) {
+ if (!starts_with(ref->name, "refs/tags/"))
+ continue;
+ if (ends_with(ref->name, "^{}"))
+ continue;
+ if (!has_object_file_with_flags(&ref->old_oid,
+ OBJECT_INFO_QUICK |
+ OBJECT_INFO_SKIP_FETCH_OBJECT))
+ continue;
+ update_ref(msg, ref->name, &ref->old_oid, NULL, 0,
+ UPDATE_REFS_DIE_ON_ERR);
+ }
+}
+
+static const struct object_id *iterate_ref_map(void *cb_data)
+{
+ struct ref **rm = cb_data;
+ struct ref *ref = *rm;
+
+ /*
+ * Skip anything missing a peer_ref, which we are not
+ * actually going to write a ref for.
+ */
+ while (ref && !ref->peer_ref)
+ ref = ref->next;
+ if (!ref)
+ return NULL;
+
+ *rm = ref->next;
+ return &ref->old_oid;
+}
+
+static void update_remote_refs(const struct ref *refs,
+ const struct ref *mapped_refs,
+ const struct ref *remote_head_points_at,
+ const char *branch_top,
+ const char *msg,
+ struct transport *transport,
+ int check_connectivity)
+{
+ const struct ref *rm = mapped_refs;
+
+ if (check_connectivity) {
+ struct check_connected_options opt = CHECK_CONNECTED_INIT;
+
+ opt.transport = transport;
+ opt.progress = transport->progress;
+
+ if (check_connected(iterate_ref_map, &rm, &opt))
+ die(_("remote did not send all necessary objects"));
+ }
+
+ if (refs) {
+ write_remote_refs(mapped_refs);
+ if (option_single_branch && !option_no_tags)
+ write_followtags(refs, msg);
+ }
+
+ if (remote_head_points_at && !option_bare) {
+ struct strbuf head_ref = STRBUF_INIT;
+ strbuf_addstr(&head_ref, branch_top);
+ strbuf_addstr(&head_ref, "HEAD");
+ if (create_symref(head_ref.buf,
+ remote_head_points_at->peer_ref->name,
+ msg) < 0)
+ die(_("unable to update %s"), head_ref.buf);
+ strbuf_release(&head_ref);
+ }
+}
+
+static void update_head(const struct ref *our, const struct ref *remote,
+ const char *unborn, const char *msg)
+{
+ const char *head;
+ if (our && skip_prefix(our->name, "refs/heads/", &head)) {
+ /* Local default branch link */
+ if (create_symref("HEAD", our->name, NULL) < 0)
+ die(_("unable to update HEAD"));
+ if (!option_bare) {
+ update_ref(msg, "HEAD", &our->old_oid, NULL, 0,
+ UPDATE_REFS_DIE_ON_ERR);
+ install_branch_config(0, head, remote_name, our->name);
+ }
+ } else if (our) {
+ struct commit *c = lookup_commit_reference(the_repository,
+ &our->old_oid);
+ /* --branch specifies a non-branch (i.e. tags), detach HEAD */
+ update_ref(msg, "HEAD", &c->object.oid, NULL, REF_NO_DEREF,
+ UPDATE_REFS_DIE_ON_ERR);
+ } else if (remote) {
+ /*
+ * We know remote HEAD points to a non-branch, or
+ * HEAD points to a branch but we don't know which one.
+ * Detach HEAD in all these cases.
+ */
+ update_ref(msg, "HEAD", &remote->old_oid, NULL, REF_NO_DEREF,
+ UPDATE_REFS_DIE_ON_ERR);
+ } else if (unborn && skip_prefix(unborn, "refs/heads/", &head)) {
+ /*
+ * Unborn head from remote; same as "our" case above except
+ * that we have no ref to update.
+ */
+ if (create_symref("HEAD", unborn, NULL) < 0)
+ die(_("unable to update HEAD"));
+ if (!option_bare)
+ install_branch_config(0, head, remote_name, unborn);
+ }
+}
+
+static int git_sparse_checkout_init(const char *repo)
+{
+ struct child_process cmd = CHILD_PROCESS_INIT;
+ int result = 0;
+ strvec_pushl(&cmd.args, "-C", repo, "sparse-checkout", "set", NULL);
+
+ /*
+ * We must apply the setting in the current process
+ * for the later checkout to use the sparse-checkout file.
+ */
+ core_apply_sparse_checkout = 1;
+
+ cmd.git_cmd = 1;
+ if (run_command(&cmd)) {
+ error(_("failed to initialize sparse-checkout"));
+ result = 1;
+ }
+
+ return result;
+}
+
+static int checkout(int submodule_progress, int filter_submodules)
+{
+ struct object_id oid;
+ char *head;
+ struct lock_file lock_file = LOCK_INIT;
+ struct unpack_trees_options opts;
+ struct tree *tree;
+ struct tree_desc t;
+ int err = 0;
+
+ if (option_no_checkout)
+ return 0;
+
+ head = resolve_refdup("HEAD", RESOLVE_REF_READING, &oid, NULL);
+ if (!head) {
+ warning(_("remote HEAD refers to nonexistent ref, "
+ "unable to checkout"));
+ return 0;
+ }
+ if (!strcmp(head, "HEAD")) {
+ if (advice_enabled(ADVICE_DETACHED_HEAD))
+ detach_advice(oid_to_hex(&oid));
+ FREE_AND_NULL(head);
+ } else {
+ if (!starts_with(head, "refs/heads/"))
+ die(_("HEAD not found below refs/heads!"));
+ }
+
+ /* We need to be in the new work tree for the checkout */
+ setup_work_tree();
+
+ repo_hold_locked_index(the_repository, &lock_file, LOCK_DIE_ON_ERROR);
+
+ memset(&opts, 0, sizeof opts);
+ opts.update = 1;
+ opts.merge = 1;
+ opts.clone = 1;
+ opts.preserve_ignored = 0;
+ opts.fn = oneway_merge;
+ opts.verbose_update = (option_verbosity >= 0);
+ opts.src_index = &the_index;
+ opts.dst_index = &the_index;
+ init_checkout_metadata(&opts.meta, head, &oid, NULL);
+
+ tree = parse_tree_indirect(&oid);
+ if (!tree)
+ die(_("unable to parse commit %s"), oid_to_hex(&oid));
+ parse_tree(tree);
+ init_tree_desc(&t, tree->buffer, tree->size);
+ if (unpack_trees(1, &t, &opts) < 0)
+ die(_("unable to checkout working tree"));
+
+ free(head);
+
+ if (write_locked_index(&the_index, &lock_file, COMMIT_LOCK))
+ die(_("unable to write new index file"));
+
+ err |= run_hooks_l("post-checkout", oid_to_hex(null_oid()),
+ oid_to_hex(&oid), "1", NULL);
+
+ if (!err && (option_recurse_submodules.nr > 0)) {
+ struct child_process cmd = CHILD_PROCESS_INIT;
+ strvec_pushl(&cmd.args, "submodule", "update", "--require-init",
+ "--recursive", NULL);
+
+ if (option_shallow_submodules == 1)
+ strvec_push(&cmd.args, "--depth=1");
+
+ if (max_jobs != -1)
+ strvec_pushf(&cmd.args, "--jobs=%d", max_jobs);
+
+ if (submodule_progress)
+ strvec_push(&cmd.args, "--progress");
+
+ if (option_verbosity < 0)
+ strvec_push(&cmd.args, "--quiet");
+
+ if (option_remote_submodules) {
+ strvec_push(&cmd.args, "--remote");
+ strvec_push(&cmd.args, "--no-fetch");
+ }
+
+ if (filter_submodules && filter_options.choice)
+ strvec_pushf(&cmd.args, "--filter=%s",
+ expand_list_objects_filter_spec(&filter_options));
+
+ if (option_single_branch >= 0)
+ strvec_push(&cmd.args, option_single_branch ?
+ "--single-branch" :
+ "--no-single-branch");
+
+ cmd.git_cmd = 1;
+ err = run_command(&cmd);
+ }
+
+ return err;
+}
+
+static int git_clone_config(const char *k, const char *v, void *cb)
+{
+ if (!strcmp(k, "clone.defaultremotename")) {
+ free(remote_name);
+ remote_name = xstrdup(v);
+ }
+ if (!strcmp(k, "clone.rejectshallow"))
+ config_reject_shallow = git_config_bool(k, v);
+ if (!strcmp(k, "clone.filtersubmodules"))
+ config_filter_submodules = git_config_bool(k, v);
+
+ return git_default_config(k, v, cb);
+}
+
+static int write_one_config(const char *key, const char *value, void *data)
+{
+ /*
+ * give git_clone_config a chance to write config values back to the
+ * environment, since git_config_set_multivar_gently only deals with
+ * config-file writes
+ */
+ int apply_failed = git_clone_config(key, value, data);
+ if (apply_failed)
+ return apply_failed;
+
+ return git_config_set_multivar_gently(key,
+ value ? value : "true",
+ CONFIG_REGEX_NONE, 0);
+}
+
+static void write_config(struct string_list *config)
+{
+ int i;
+
+ for (i = 0; i < config->nr; i++) {
+ if (git_config_parse_parameter(config->items[i].string,
+ write_one_config, NULL) < 0)
+ die(_("unable to write parameters to config file"));
+ }
+}
+
+static void write_refspec_config(const char *src_ref_prefix,
+ const struct ref *our_head_points_at,
+ const struct ref *remote_head_points_at,
+ struct strbuf *branch_top)
+{
+ struct strbuf key = STRBUF_INIT;
+ struct strbuf value = STRBUF_INIT;
+
+ if (option_mirror || !option_bare) {
+ if (option_single_branch && !option_mirror) {
+ if (option_branch) {
+ if (starts_with(our_head_points_at->name, "refs/tags/"))
+ strbuf_addf(&value, "+%s:%s", our_head_points_at->name,
+ our_head_points_at->name);
+ else
+ strbuf_addf(&value, "+%s:%s%s", our_head_points_at->name,
+ branch_top->buf, option_branch);
+ } else if (remote_head_points_at) {
+ const char *head = remote_head_points_at->name;
+ if (!skip_prefix(head, "refs/heads/", &head))
+ BUG("remote HEAD points at non-head?");
+
+ strbuf_addf(&value, "+%s:%s%s", remote_head_points_at->name,
+ branch_top->buf, head);
+ }
+ /*
+ * otherwise, the next "git fetch" will
+ * simply fetch from HEAD without updating
+ * any remote-tracking branch, which is what
+ * we want.
+ */
+ } else {
+ strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top->buf);
+ }
+ /* Configure the remote */
+ if (value.len) {
+ strbuf_addf(&key, "remote.%s.fetch", remote_name);
+ git_config_set_multivar(key.buf, value.buf, "^$", 0);
+ strbuf_reset(&key);
+
+ if (option_mirror) {
+ strbuf_addf(&key, "remote.%s.mirror", remote_name);
+ git_config_set(key.buf, "true");
+ strbuf_reset(&key);
+ }
+ }
+ }
+
+ strbuf_release(&key);
+ strbuf_release(&value);
+}
+
+static void dissociate_from_references(void)
+{
+ char *alternates = git_pathdup("objects/info/alternates");
+
+ if (!access(alternates, F_OK)) {
+ struct child_process cmd = CHILD_PROCESS_INIT;
+
+ cmd.git_cmd = 1;
+ cmd.no_stdin = 1;
+ strvec_pushl(&cmd.args, "repack", "-a", "-d", NULL);
+ if (run_command(&cmd))
+ die(_("cannot repack to clean up"));
+ if (unlink(alternates) && errno != ENOENT)
+ die_errno(_("cannot unlink temporary alternates file"));
+ }
+ free(alternates);
+}
+
+static int path_exists(const char *path)
+{
+ struct stat sb;
+ return !stat(path, &sb);
+}
+
+int cmd_clone(int argc, const char **argv, const char *prefix)
+{
+ int is_bundle = 0, is_local;
+ int reject_shallow = 0;
+ const char *repo_name, *repo, *work_tree, *git_dir;
+ char *path = NULL, *dir, *display_repo = NULL;
+ int dest_exists, real_dest_exists = 0;
+ const struct ref *refs, *remote_head;
+ struct ref *remote_head_points_at = NULL;
+ const struct ref *our_head_points_at;
+ char *unborn_head = NULL;
+ struct ref *mapped_refs = NULL;
+ const struct ref *ref;
+ struct strbuf key = STRBUF_INIT;
+ struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
+ struct transport *transport = NULL;
+ const char *src_ref_prefix = "refs/heads/";
+ struct remote *remote;
+ int err = 0, complete_refs_before_fetch = 1;
+ int submodule_progress;
+ int filter_submodules = 0;
+
+ struct transport_ls_refs_options transport_ls_refs_options =
+ TRANSPORT_LS_REFS_OPTIONS_INIT;
+
+ packet_trace_identity("clone");
+
+ git_config(git_clone_config, NULL);
+
+ argc = parse_options(argc, argv, prefix, builtin_clone_options,
+ builtin_clone_usage, 0);
+
+ if (argc > 2)
+ usage_msg_opt(_("Too many arguments."),
+ builtin_clone_usage, builtin_clone_options);
+
+ if (argc == 0)
+ usage_msg_opt(_("You must specify a repository to clone."),
+ builtin_clone_usage, builtin_clone_options);
+
+ if (option_depth || option_since || option_not.nr)
+ deepen = 1;
+ if (option_single_branch == -1)
+ option_single_branch = deepen ? 1 : 0;
+
+ if (option_mirror)
+ option_bare = 1;
+
+ if (option_bare) {
+ if (real_git_dir)
+ die(_("options '%s' and '%s' cannot be used together"), "--bare", "--separate-git-dir");
+ option_no_checkout = 1;
+ }
+
+ if (bundle_uri && deepen)
+ die(_("--bundle-uri is incompatible with --depth, --shallow-since, and --shallow-exclude"));
+
+ repo_name = argv[0];
+
+ path = get_repo_path(repo_name, &is_bundle);
+ if (path) {
+ FREE_AND_NULL(path);
+ repo = absolute_pathdup(repo_name);
+ } else if (strchr(repo_name, ':')) {
+ repo = repo_name;
+ display_repo = transport_anonymize_url(repo);
+ } else
+ die(_("repository '%s' does not exist"), repo_name);
+
+ /* no need to be strict, transport_set_option() will validate it again */
+ if (option_depth && atoi(option_depth) < 1)
+ die(_("depth %s is not a positive number"), option_depth);
+
+ if (argc == 2)
+ dir = xstrdup(argv[1]);
+ else
+ dir = git_url_basename(repo_name, is_bundle, option_bare);
+ strip_dir_trailing_slashes(dir);
+
+ dest_exists = path_exists(dir);
+ if (dest_exists && !is_empty_dir(dir))
+ die(_("destination path '%s' already exists and is not "
+ "an empty directory."), dir);
+
+ if (real_git_dir) {
+ real_dest_exists = path_exists(real_git_dir);
+ if (real_dest_exists && !is_empty_dir(real_git_dir))
+ die(_("repository path '%s' already exists and is not "
+ "an empty directory."), real_git_dir);
+ }
+
+
+ strbuf_addf(&reflog_msg, "clone: from %s",
+ display_repo ? display_repo : repo);
+ free(display_repo);
+
+ if (option_bare)
+ work_tree = NULL;
+ else {
+ work_tree = getenv("GIT_WORK_TREE");
+ if (work_tree && path_exists(work_tree))
+ die(_("working tree '%s' already exists."), work_tree);
+ }
+
+ if (option_bare || work_tree)
+ git_dir = xstrdup(dir);
+ else {
+ work_tree = dir;
+ git_dir = mkpathdup("%s/.git", dir);
+ }
+
+ atexit(remove_junk);
+ sigchain_push_common(remove_junk_on_signal);
+
+ if (!option_bare) {
+ if (safe_create_leading_directories_const(work_tree) < 0)
+ die_errno(_("could not create leading directories of '%s'"),
+ work_tree);
+ if (dest_exists)
+ junk_work_tree_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
+ else if (mkdir(work_tree, 0777))
+ die_errno(_("could not create work tree dir '%s'"),
+ work_tree);
+ junk_work_tree = work_tree;
+ set_git_work_tree(work_tree);
+ }
+
+ if (real_git_dir) {
+ if (real_dest_exists)
+ junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
+ junk_git_dir = real_git_dir;
+ } else {
+ if (dest_exists)
+ junk_git_dir_flags |= REMOVE_DIR_KEEP_TOPLEVEL;
+ junk_git_dir = git_dir;
+ }
+ if (safe_create_leading_directories_const(git_dir) < 0)
+ die(_("could not create leading directories of '%s'"), git_dir);
+
+ if (0 <= option_verbosity) {
+ if (option_bare)
+ fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir);
+ else
+ fprintf(stderr, _("Cloning into '%s'...\n"), dir);
+ }
+
+ if (option_recurse_submodules.nr > 0) {
+ struct string_list_item *item;
+ struct strbuf sb = STRBUF_INIT;
+ int val;
+
+ /* remove duplicates */
+ string_list_sort(&option_recurse_submodules);
+ string_list_remove_duplicates(&option_recurse_submodules, 0);
+
+ /*
+ * NEEDSWORK: In a multi-working-tree world, this needs to be
+ * set in the per-worktree config.
+ */
+ for_each_string_list_item(item, &option_recurse_submodules) {
+ strbuf_addf(&sb, "submodule.active=%s",
+ item->string);
+ string_list_append(&option_config,
+ strbuf_detach(&sb, NULL));
+ }
+
+ if (!git_config_get_bool("submodule.stickyRecursiveClone", &val) &&
+ val)
+ string_list_append(&option_config, "submodule.recurse=true");
+
+ if (option_required_reference.nr &&
+ option_optional_reference.nr)
+ die(_("clone --recursive is not compatible with "
+ "both --reference and --reference-if-able"));
+ else if (option_required_reference.nr) {
+ string_list_append(&option_config,
+ "submodule.alternateLocation=superproject");
+ string_list_append(&option_config,
+ "submodule.alternateErrorStrategy=die");
+ } else if (option_optional_reference.nr) {
+ string_list_append(&option_config,
+ "submodule.alternateLocation=superproject");
+ string_list_append(&option_config,
+ "submodule.alternateErrorStrategy=info");
+ }
+ }
+
+ init_db(git_dir, real_git_dir, option_template, GIT_HASH_UNKNOWN, NULL,
+ INIT_DB_QUIET);
+
+ if (real_git_dir) {
+ free((char *)git_dir);
+ git_dir = real_git_dir;
+ }
+
+ /*
+ * additional config can be injected with -c, make sure it's included
+ * after init_db, which clears the entire config environment.
+ */
+ write_config(&option_config);
+
+ /*
+ * re-read config after init_db and write_config to pick up any config
+ * injected by --template and --config, respectively.
+ */
+ git_config(git_clone_config, NULL);
+
+ /*
+ * If option_reject_shallow is specified from CLI option,
+ * ignore config_reject_shallow from git_clone_config.
+ */
+ if (config_reject_shallow != -1)
+ reject_shallow = config_reject_shallow;
+ if (option_reject_shallow != -1)
+ reject_shallow = option_reject_shallow;
+
+ /*
+ * If option_filter_submodules is specified from CLI option,
+ * ignore config_filter_submodules from git_clone_config.
+ */
+ if (config_filter_submodules != -1)
+ filter_submodules = config_filter_submodules;
+ if (option_filter_submodules != -1)
+ filter_submodules = option_filter_submodules;
+
+ /*
+ * Exit if the user seems to be doing something silly with submodule
+ * filter flags (but not with filter configs, as those should be
+ * set-and-forget).
+ */
+ if (option_filter_submodules > 0 && !filter_options.choice)
+ die(_("the option '%s' requires '%s'"),
+ "--also-filter-submodules", "--filter");
+ if (option_filter_submodules > 0 && !option_recurse_submodules.nr)
+ die(_("the option '%s' requires '%s'"),
+ "--also-filter-submodules", "--recurse-submodules");
+
+ /*
+ * apply the remote name provided by --origin only after this second
+ * call to git_config, to ensure it overrides all config-based values.
+ */
+ if (option_origin) {
+ free(remote_name);
+ remote_name = xstrdup(option_origin);
+ }
+
+ if (!remote_name)
+ remote_name = xstrdup("origin");
+
+ if (!valid_remote_name(remote_name))
+ die(_("'%s' is not a valid remote name"), remote_name);
+
+ if (option_bare) {
+ if (option_mirror)
+ src_ref_prefix = "refs/";
+ strbuf_addstr(&branch_top, src_ref_prefix);
+
+ git_config_set("core.bare", "true");
+ } else {
+ strbuf_addf(&branch_top, "refs/remotes/%s/", remote_name);
+ }
+
+ strbuf_addf(&key, "remote.%s.url", remote_name);
+ git_config_set(key.buf, repo);
+ strbuf_reset(&key);
+
+ if (option_no_tags) {
+ strbuf_addf(&key, "remote.%s.tagOpt", remote_name);
+ git_config_set(key.buf, "--no-tags");
+ strbuf_reset(&key);
+ }
+
+ if (option_required_reference.nr || option_optional_reference.nr)
+ setup_reference();
+
+ if (option_sparse_checkout && git_sparse_checkout_init(dir))
+ return 1;
+
+ remote = remote_get(remote_name);
+
+ refspec_appendf(&remote->fetch, "+%s*:%s*", src_ref_prefix,
+ branch_top.buf);
+
+ path = get_repo_path(remote->url[0], &is_bundle);
+ is_local = option_local != 0 && path && !is_bundle;
+ if (is_local) {
+ if (option_depth)
+ warning(_("--depth is ignored in local clones; use file:// instead."));
+ if (option_since)
+ warning(_("--shallow-since is ignored in local clones; use file:// instead."));
+ if (option_not.nr)
+ warning(_("--shallow-exclude is ignored in local clones; use file:// instead."));
+ if (filter_options.choice)
+ warning(_("--filter is ignored in local clones; use file:// instead."));
+ if (!access(mkpath("%s/shallow", path), F_OK)) {
+ if (reject_shallow)
+ die(_("source repository is shallow, reject to clone."));
+ if (option_local > 0)
+ warning(_("source repository is shallow, ignoring --local"));
+ is_local = 0;
+ }
+ }
+ if (option_local > 0 && !is_local)
+ warning(_("--local is ignored"));
+
+ transport = transport_get(remote, path ? path : remote->url[0]);
+ transport_set_verbosity(transport, option_verbosity, option_progress);
+ transport->family = family;
+ transport->cloning = 1;
+
+ if (is_bundle) {
+ struct bundle_header header = BUNDLE_HEADER_INIT;
+ int fd = read_bundle_header(path, &header);
+ int has_filter = header.filter.choice != LOFC_DISABLED;
+
+ if (fd > 0)
+ close(fd);
+ bundle_header_release(&header);
+ if (has_filter)
+ die(_("cannot clone from filtered bundle"));
+ }
+
+ transport_set_option(transport, TRANS_OPT_KEEP, "yes");
+
+ if (reject_shallow)
+ transport_set_option(transport, TRANS_OPT_REJECT_SHALLOW, "1");
+ if (option_depth)
+ transport_set_option(transport, TRANS_OPT_DEPTH,
+ option_depth);
+ if (option_since)
+ transport_set_option(transport, TRANS_OPT_DEEPEN_SINCE,
+ option_since);
+ if (option_not.nr)
+ transport_set_option(transport, TRANS_OPT_DEEPEN_NOT,
+ (const char *)&option_not);
+ if (option_single_branch)
+ transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1");
+
+ if (option_upload_pack)
+ transport_set_option(transport, TRANS_OPT_UPLOADPACK,
+ option_upload_pack);
+
+ if (server_options.nr)
+ transport->server_options = &server_options;
+
+ if (filter_options.choice) {
+ const char *spec =
+ expand_list_objects_filter_spec(&filter_options);
+ transport_set_option(transport, TRANS_OPT_LIST_OBJECTS_FILTER,
+ spec);
+ transport_set_option(transport, TRANS_OPT_FROM_PROMISOR, "1");
+ }
+
+ if (transport->smart_options && !deepen && !filter_options.choice)
+ transport->smart_options->check_self_contained_and_connected = 1;
+
+ /*
+ * Before fetching from the remote, download and install bundle
+ * data from the --bundle-uri option.
+ */
+ if (bundle_uri) {
+ /* At this point, we need the_repository to match the cloned repo. */
+ if (repo_init(the_repository, git_dir, work_tree))
+ warning(_("failed to initialize the repo, skipping bundle URI"));
+ else if (fetch_bundle_uri(the_repository, bundle_uri))
+ warning(_("failed to fetch objects from bundle URI '%s'"),
+ bundle_uri);
+ }
+
+ strvec_push(&transport_ls_refs_options.ref_prefixes, "HEAD");
+ refspec_ref_prefixes(&remote->fetch,
+ &transport_ls_refs_options.ref_prefixes);
+ if (option_branch)
+ expand_ref_prefix(&transport_ls_refs_options.ref_prefixes,
+ option_branch);
+ if (!option_no_tags)
+ strvec_push(&transport_ls_refs_options.ref_prefixes,
+ "refs/tags/");
+
+ refs = transport_get_remote_refs(transport, &transport_ls_refs_options);
+
+ if (refs)
+ mapped_refs = wanted_peer_refs(refs, &remote->fetch);
+
+ if (mapped_refs) {
+ int hash_algo = hash_algo_by_ptr(transport_get_hash_algo(transport));
+
+ /*
+ * Now that we know what algorithm the remote side is using,
+ * let's set ours to the same thing.
+ */
+ initialize_repository_version(hash_algo, 1);
+ repo_set_hash_algo(the_repository, hash_algo);
+ /*
+ * transport_get_remote_refs() may return refs with null sha-1
+ * in mapped_refs (see struct transport->get_refs_list
+ * comment). In that case we need fetch it early because
+ * remote_head code below relies on it.
+ *
+ * for normal clones, transport_get_remote_refs() should
+ * return reliable ref set, we can delay cloning until after
+ * remote HEAD check.
+ */
+ for (ref = refs; ref; ref = ref->next)
+ if (is_null_oid(&ref->old_oid)) {
+ complete_refs_before_fetch = 0;
+ break;
+ }
+
+ if (!is_local && !complete_refs_before_fetch) {
+ if (transport_fetch_refs(transport, mapped_refs))
+ die(_("remote transport reported error"));
+ }
+ }
+
+ remote_head = find_ref_by_name(refs, "HEAD");
+ remote_head_points_at = guess_remote_head(remote_head, mapped_refs, 0);
+
+ if (option_branch) {
+ our_head_points_at = find_remote_branch(mapped_refs, option_branch);
+ if (!our_head_points_at)
+ die(_("Remote branch %s not found in upstream %s"),
+ option_branch, remote_name);
+ } else if (remote_head_points_at) {
+ our_head_points_at = remote_head_points_at;
+ } else if (remote_head) {
+ our_head_points_at = NULL;
+ } else {
+ const char *branch;
+
+ if (!mapped_refs) {
+ warning(_("You appear to have cloned an empty repository."));
+ option_no_checkout = 1;
+ }
+
+ if (transport_ls_refs_options.unborn_head_target &&
+ skip_prefix(transport_ls_refs_options.unborn_head_target,
+ "refs/heads/", &branch)) {
+ unborn_head = xstrdup(transport_ls_refs_options.unborn_head_target);
+ } else {
+ branch = git_default_branch_name(0);
+ unborn_head = xstrfmt("refs/heads/%s", branch);
+ }
+
+ /*
+ * We may have selected a local default branch name "foo",
+ * and even though the remote's HEAD does not point there,
+ * it may still have a "foo" branch. If so, set it up so
+ * that we can follow the usual checkout code later.
+ *
+ * Note that for an empty repo we'll already have set
+ * option_no_checkout above, which would work against us here.
+ * But for an empty repo, find_remote_branch() can never find
+ * a match.
+ */
+ our_head_points_at = find_remote_branch(mapped_refs, branch);
+ }
+
+ write_refspec_config(src_ref_prefix, our_head_points_at,
+ remote_head_points_at, &branch_top);
+
+ if (filter_options.choice)
+ partial_clone_register(remote_name, &filter_options);
+
+ if (is_local)
+ clone_local(path, git_dir);
+ else if (mapped_refs && complete_refs_before_fetch) {
+ if (transport_fetch_refs(transport, mapped_refs))
+ die(_("remote transport reported error"));
+ }
+
+ update_remote_refs(refs, mapped_refs, remote_head_points_at,
+ branch_top.buf, reflog_msg.buf, transport,
+ !is_local);
+
+ update_head(our_head_points_at, remote_head, unborn_head, reflog_msg.buf);
+
+ /*
+ * We want to show progress for recursive submodule clones iff
+ * we did so for the main clone. But only the transport knows
+ * the final decision for this flag, so we need to rescue the value
+ * before we free the transport.
+ */
+ submodule_progress = transport->progress;
+
+ transport_unlock_pack(transport, 0);
+ transport_disconnect(transport);
+
+ if (option_dissociate) {
+ close_object_store(the_repository->objects);
+ dissociate_from_references();
+ }
+
+ junk_mode = JUNK_LEAVE_REPO;
+ err = checkout(submodule_progress, filter_submodules);
+
+ free(remote_name);
+ strbuf_release(&reflog_msg);
+ strbuf_release(&branch_top);
+ strbuf_release(&key);
+ free_refs(mapped_refs);
+ free_refs(remote_head_points_at);
+ free(unborn_head);
+ free(dir);
+ free(path);
+ UNLEAK(repo);
+ junk_mode = JUNK_LEAVE_ALL;
+
+ transport_ls_refs_options_release(&transport_ls_refs_options);
+ return err;
+}