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#!/bin/bash
# SPDX-License-Identifier: LGPL-2.1-or-later
set -e
set -o nounset
if ((${NO_SYNC:-0})); then
exit 0
fi
PKG_SUBDIR="$(realpath --canonicalize-missing "pkg/$DISTRIBUTION" --relative-to "$PWD")"
if [[ -d "$PKG_SUBDIR/.git" ]] && [[ "$(git -C "$PKG_SUBDIR" rev-parse HEAD)" == "$GIT_COMMIT" ]]; then
exit 0
fi
# The repository on Salsa has the full upstream sources, so it's a waste of space to
# redownload and duplicate everything, so do a sparse checkout as we only need the
# packaging directory anyway
if [[ -n "${GIT_SUBDIR:-}" ]]; then
sparse=(--no-checkout --filter=tree:0)
else
sparse=()
fi
if [[ ! -e "$PKG_SUBDIR" ]] || [[ -z "$(ls --almost-all "$PKG_SUBDIR")" ]]; then
git clone "$GIT_URL" --branch "$GIT_BRANCH" "${sparse[@]}" "$PKG_SUBDIR"
if [[ -n "${GIT_SUBDIR:-}" ]]; then
# --no-cone is needed to check out only one top-level directory
git -C "$PKG_SUBDIR" sparse-checkout set --no-cone "${GIT_SUBDIR:-}"
fi
else
git -C "$PKG_SUBDIR" remote set-url origin "$GIT_URL"
git -C "$PKG_SUBDIR" fetch origin "$GIT_BRANCH"
fi
git -C "$PKG_SUBDIR" -c advice.detachedHead=false checkout "$GIT_COMMIT"
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