Merging upstream version 1.72.1+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

10 files changed, 291 insertions, 37 deletions

diff --git a/vendor/gix-hash/.cargo-checksum.json b/vendor/gix-hash/.cargo-checksum.json
index f988d45fb..6e3bc395b 100644
--- a/vendor/gix-hash/.cargo-checksum.json
+++ b/vendor/gix-hash/.cargo-checksum.json
@@ -1 +1 @@
-{"files":{"CHANGELOG.md":"3792e871c424e63e48810ad1c81e1675ada9640872f209a576364e07ae6231d3","Cargo.toml":"b6a812ab0d28742d26a213190406b8e61e5aca570c16d517115948d2ef699d06","src/kind.rs":"9d056e9553b5aa0d1a6706f51f443b345d05a95059295b6dc675cb4d6dec0696","src/lib.rs":"48c925d07f6ab27e52496139ba134bb9a8c69f037c87cc97fd0ac6233314b4ec","src/object_id.rs":"8d085bd6047592eae5a07bde7bb18017df007bf4fb4b70302c59ea4e4ded813e","src/oid.rs":"c3555b317f21673158010d8bf351b6bbe11bc2a12c4a9170105184555c120805","src/prefix.rs":"5bf4e3dfc605569280054983c28d501a585ce04b6948babffea24e14925d526f"},"package":"078eec3ac2808cc03f0bddd2704cb661da5c5dc33b41a9d7947b141d499c7c42"}
\ No newline at end of file
+{"files":{"CHANGELOG.md":"c63bb56e90f1ed541ad93907fc9e637363fab75efa4d461f1d97c16f1e8edfef","Cargo.toml":"35ff2df9e355e3ba2f5c0502bfe1fdb1d0e28de601a258802e5b9633d80413d7","LICENSE-APACHE":"cb4780590812826851ba250f90bed0ed19506ec98f6865a0e2e20bbf62391ff9","LICENSE-MIT":"49df47913ab2beafe8dc45607877ae64198bf0eee64aaad3e82ed9e4d27424e8","src/kind.rs":"b76634865925155fddcf10a94ec37f08be8a61855438ce2577566fda816006f0","src/lib.rs":"9079b3ac1e6471a5fd05dbea751d1ef29bea008be3d2a11978d1ead757441c56","src/object_id.rs":"c9ca58241acd05702f54ab6b3ab642d696d61b3ddf818b89c61817dd58177614","src/oid.rs":"90db69ca5bebd181db5ea6bc614f1a9c888ffc1779b74388652ea8e00aaec5c0","src/prefix.rs":"fb19dbd908bbf5bbb4af1541c9fe0f64d09ad1b01eb3a4b59eb2d0c35454d92e"},"package":"ee181c85d3955f54c4426e6bfaeeada4428692e1a39b8788c2ac7785fc301dd8"}
\ No newline at end of file
diff --git a/vendor/gix-hash/CHANGELOG.md b/vendor/gix-hash/CHANGELOG.md
index c46aa0ccf..6af4f7b9a 100644
--- a/vendor/gix-hash/CHANGELOG.md
+++ b/vendor/gix-hash/CHANGELOG.md
@@ -5,6 +5,39 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 0.11.2 (2023-06-06)
+
+### New Features
+
+ - <csr-id-8d645b0494bb0376358fcf6e57a37b865ca91a96/> add `ObjectId::is_empty_tree()` as sybling of `::is_empty_blob()`.
+
+### Commit Statistics
+
+<csr-read-only-do-not-edit/>
+
+ - 9 commits contributed to the release over the course of 12 calendar days.
+ - 40 days passed between releases.
+ - 1 commit was understood as [conventional](https://www.conventionalcommits.org).
+ - 0 issues like '(#ID)' were seen in commit messages
+
+### Commit Details
+
+<csr-read-only-do-not-edit/>
+
+<details><summary>view details</summary>
+
+ * **Uncategorized**
+    - Prepare changelogs prior to release ([`8f15cec`](https://github.com/Byron/gitoxide/commit/8f15cec1ec7d5a9d56bb158f155011ef2bb3539b))
+    - Add `ObjectId::is_empty_tree()` as sybling of `::is_empty_blob()`. ([`8d645b0`](https://github.com/Byron/gitoxide/commit/8d645b0494bb0376358fcf6e57a37b865ca91a96))
+    - Merge branch 'fix-docs' ([`420553a`](https://github.com/Byron/gitoxide/commit/420553a10d780e0b2dc466cac120989298a5f187))
+    - Cleaning up documentation ([`2578e57`](https://github.com/Byron/gitoxide/commit/2578e576bfa365d194a23a1fb0bf09be230873de))
+    - Merge branch 'auto-clippy' ([`dbf8aa1`](https://github.com/Byron/gitoxide/commit/dbf8aa19d19109195d0274928eae4b94f248cd88))
+    - Auto-fix as many 'range-plus-one' lints as possible ([`4795fcf`](https://github.com/Byron/gitoxide/commit/4795fcf6adb06b792592a1b11a3f071e9d47b1ac))
+    - Merge branch 'main' into auto-clippy ([`3ef5c90`](https://github.com/Byron/gitoxide/commit/3ef5c90aebce23385815f1df674c1d28d58b4b0d))
+    - Merge branch 'blinxen/main' ([`9375cd7`](https://github.com/Byron/gitoxide/commit/9375cd75b01aa22a0e2eed6305fe45fabfd6c1ac))
+    - Include license files in all crates ([`facaaf6`](https://github.com/Byron/gitoxide/commit/facaaf633f01c857dcf2572c6dbe0a92b7105c1c))
+</details>
+
 ## 0.11.1 (2023-04-26)
 
 A maintenance release without user-facing changes.
@@ -13,7 +46,7 @@ A maintenance release without user-facing changes.
 
 <csr-read-only-do-not-edit/>
 
- - 3 commits contributed to the release over the course of 4 calendar days.
+ - 4 commits contributed to the release over the course of 4 calendar days.
  - 7 days passed between releases.
  - 0 commits were understood as [conventional](https://www.conventionalcommits.org).
  - 0 issues like '(#ID)' were seen in commit messages
@@ -31,6 +64,7 @@ A maintenance release without user-facing changes.
 <details><summary>view details</summary>
 
  * **Uncategorized**
+    - Release gix-hash v0.11.1, gix-path v0.7.4, gix-glob v0.6.0, gix-attributes v0.11.0, gix-config-value v0.11.0, gix-fs v0.1.1, gix-tempfile v5.0.3, gix-utils v0.1.1, gix-lock v5.0.1, gix-object v0.29.1, gix-ref v0.28.0, gix-sec v0.7.0, gix-config v0.21.0, gix-prompt v0.4.0, gix-url v0.17.0, gix-credentials v0.13.0, gix-diff v0.29.0, gix-discover v0.17.0, gix-hashtable v0.2.0, gix-ignore v0.1.0, gix-bitmap v0.2.3, gix-traverse v0.25.0, gix-index v0.16.0, gix-mailmap v0.12.0, gix-pack v0.34.0, gix-odb v0.44.0, gix-packetline v0.16.0, gix-transport v0.30.0, gix-protocol v0.31.0, gix-revision v0.13.0, gix-refspec v0.10.0, gix-worktree v0.16.0, gix v0.44.0, safety bump 7 crates ([`91134a1`](https://github.com/Byron/gitoxide/commit/91134a11c8ba0e942f692488ec9bce9fa1086324))
     - Prepare changelogs prior to release ([`30a1a71`](https://github.com/Byron/gitoxide/commit/30a1a71f36f24faac0e0b362ffdfedea7f9cdbf1))
     - Merge branch 'fix-823' ([`6ebd61e`](https://github.com/Byron/gitoxide/commit/6ebd61e548a36a04e413ac725a03e607a3588334))
     - Thanks clippy ([`14e64e7`](https://github.com/Byron/gitoxide/commit/14e64e74649cfb1f2f99da87015939af98fae5c8))
diff --git a/vendor/gix-hash/Cargo.toml b/vendor/gix-hash/Cargo.toml
index 8a66164da..41fe15de6 100644
--- a/vendor/gix-hash/Cargo.toml
+++ b/vendor/gix-hash/Cargo.toml
@@ -13,10 +13,11 @@
 edition = "2021"
 rust-version = "1.64"
 name = "gix-hash"
-version = "0.11.1"
+version = "0.11.2"
 authors = ["Sebastian Thiel <sebastian.thiel@icloud.com>"]
 include = [
     "src/**/*",
+    "LICENSE-*",
     "CHANGELOG.md",
 ]
 description = "Borrowed and owned git hash digests used to identify git objects"
diff --git a/vendor/gix-hash/LICENSE-APACHE b/vendor/gix-hash/LICENSE-APACHE
new file mode 100644
index 000000000..a51f59a06
--- /dev/null
+++ b/vendor/gix-hash/LICENSE-APACHE
@@ -0,0 +1,191 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2018-2021 Sebastian Thiel, and [contributors](https://github.com/byron/gitoxide/contributors)
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/gix-hash/LICENSE-MIT b/vendor/gix-hash/LICENSE-MIT
new file mode 100644
index 000000000..b58e818f1
--- /dev/null
+++ b/vendor/gix-hash/LICENSE-MIT
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2018-2021 Sebastian Thiel, and [contributors](https://github.com/byron/gitoxide/contributors).
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/gix-hash/src/kind.rs b/vendor/gix-hash/src/kind.rs
index 902cf705d..ee8600b1b 100644
--- a/vendor/gix-hash/src/kind.rs
+++ b/vendor/gix-hash/src/kind.rs
@@ -57,14 +57,14 @@ impl Kind {
         [0u8; Kind::longest().len_in_bytes()]
     }
 
-    /// Returns the amount of ascii-characters needed to encode this has in hex.
+    /// Returns the amount of bytes needed to encode this instance as hexadecimal characters.
     #[inline]
     pub const fn len_in_hex(&self) -> usize {
         match self {
             Kind::Sha1 => 40,
         }
     }
-    /// Returns the amount of bytes taken up by the hash of the current kind.
+    /// Returns the amount of bytes taken up by the hash of this instance.
     #[inline]
     pub const fn len_in_bytes(&self) -> usize {
         match self {
@@ -73,7 +73,7 @@ impl Kind {
     }
 
     /// Returns the kind of hash that would fit the given `hex_len`, or `None` if there is no fitting hash.
-    /// Note that 0 as `hex_len` fits always yields Sha1.
+    /// Note that `0` as `hex_len` up to 40 always yields `Sha1`.
     #[inline]
     pub const fn from_hex_len(hex_len: usize) -> Option<Self> {
         Some(match hex_len {
@@ -98,7 +98,7 @@ impl Kind {
         }
     }
 
-    /// Create a null-id of our hash kind.
+    /// Create a shared null-id of our hash kind.
     #[inline]
     pub fn null_ref(&self) -> &'static oid {
         match self {
@@ -106,7 +106,7 @@ impl Kind {
         }
     }
 
-    /// Create a null-id of our hash kind.
+    /// Create an owned null-id of our hash kind.
     #[inline]
     pub const fn null(&self) -> ObjectId {
         match self {
diff --git a/vendor/gix-hash/src/lib.rs b/vendor/gix-hash/src/lib.rs
index 49940f48e..f4a8d3f23 100644
--- a/vendor/gix-hash/src/lib.rs
+++ b/vendor/gix-hash/src/lib.rs
@@ -1,6 +1,6 @@
 //! This crate provides types for identifying git objects using a hash digest.
 //!
-//! These are provided in borrowed versions as well as owned ones.
+//! These are provided in [borrowed versions][oid] as well as an [owned one][ObjectId].
 //! ## Feature Flags
 #![cfg_attr(
     feature = "document-features",
@@ -19,8 +19,10 @@ pub use object_id::{decode, ObjectId};
 ///
 pub mod prefix;
 
-/// An partial owned hash possibly identifying an object uniquely,
-/// whose non-prefix bytes are zeroed.
+/// An partial, owned hash possibly identifying an object uniquely, whose non-prefix bytes are zeroed.
+///
+/// An example would `0000000000000000000000000000000032bd3242`, where `32bd3242` is the prefix,
+/// which would be able to match all hashes that *start with* `32bd3242`.
 #[derive(PartialEq, Eq, Hash, Ord, PartialOrd, Clone, Copy, Debug)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct Prefix {
@@ -31,7 +33,7 @@ pub struct Prefix {
 /// The size of a SHA1 hash digest in bytes.
 const SIZE_OF_SHA1_DIGEST: usize = 20;
 
-/// Denotes the kind of function to produce a `Id`.
+/// Denotes the kind of function to produce a [`ObjectId`].
 #[derive(Default, PartialEq, Eq, Debug, Hash, Ord, PartialOrd, Clone, Copy)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum Kind {
diff --git a/vendor/gix-hash/src/object_id.rs b/vendor/gix-hash/src/object_id.rs
index 2d9bcef33..8bf19a744 100644
--- a/vendor/gix-hash/src/object_id.rs
+++ b/vendor/gix-hash/src/object_id.rs
@@ -1,14 +1,13 @@
 use std::{
     borrow::Borrow,
     convert::TryInto,
-    fmt,
     hash::{Hash, Hasher},
     ops::Deref,
 };
 
 use crate::{borrowed::oid, Kind, SIZE_OF_SHA1_DIGEST};
 
-/// An owned hash identifying objects, most commonly Sha1
+/// An owned hash identifying objects, most commonly `Sha1`
 #[derive(PartialEq, Eq, Ord, PartialOrd, Clone, Copy)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum ObjectId {
@@ -77,11 +76,11 @@ pub mod decode {
 
 /// Access and conversion
 impl ObjectId {
-    /// Returns the kind of hash used in this `Id`.
+    /// Returns the kind of hash used in this instance.
     #[inline]
-    pub fn kind(&self) -> crate::Kind {
+    pub fn kind(&self) -> Kind {
         match self {
-            ObjectId::Sha1(_) => crate::Kind::Sha1,
+            ObjectId::Sha1(_) => Kind::Sha1,
         }
     }
     /// Return the raw byte slice representing this hash.
@@ -119,7 +118,15 @@ impl ObjectId {
         }
     }
 
-    /// Returns true if this hash consists of all null bytes.
+    /// Returns an instances whose bytes are all zero.
+    #[inline]
+    pub const fn null(kind: Kind) -> ObjectId {
+        match kind {
+            Kind::Sha1 => Self::null_sha1(),
+        }
+    }
+
+    /// Returns `true` if this hash consists of all null bytes.
     #[inline]
     pub fn is_null(&self) -> bool {
         match self {
@@ -133,12 +140,10 @@ impl ObjectId {
         self == &Self::empty_blob(self.kind())
     }
 
-    /// Returns an Digest representing a hash with whose memory is zeroed.
+    /// Returns `true` if this hash is equal to an empty tree.
     #[inline]
-    pub const fn null(kind: crate::Kind) -> ObjectId {
-        match kind {
-            crate::Kind::Sha1 => Self::null_sha1(),
-        }
+    pub fn is_empty_tree(&self) -> bool {
+        self == &Self::empty_tree(self.kind())
     }
 }
 
@@ -194,10 +199,10 @@ impl From<&[u8]> for ObjectId {
     }
 }
 
-impl From<&crate::oid> for ObjectId {
+impl From<&oid> for ObjectId {
     fn from(v: &oid) -> Self {
         match v.kind() {
-            crate::Kind::Sha1 => ObjectId::from_20_bytes(v.as_bytes()),
+            Kind::Sha1 => ObjectId::from_20_bytes(v.as_bytes()),
         }
     }
 }
@@ -210,25 +215,25 @@ impl Deref for ObjectId {
     }
 }
 
-impl AsRef<crate::oid> for ObjectId {
+impl AsRef<oid> for ObjectId {
     fn as_ref(&self) -> &oid {
         oid::from_bytes_unchecked(self.as_slice())
     }
 }
 
-impl Borrow<crate::oid> for ObjectId {
+impl Borrow<oid> for ObjectId {
     fn borrow(&self) -> &oid {
         self.as_ref()
     }
 }
 
-impl fmt::Display for ObjectId {
-    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+impl std::fmt::Display for ObjectId {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(f, "{}", self.to_hex())
     }
 }
 
-impl PartialEq<&crate::oid> for ObjectId {
+impl PartialEq<&oid> for ObjectId {
     fn eq(&self, other: &&oid) -> bool {
         self.as_ref() == *other
     }
diff --git a/vendor/gix-hash/src/oid.rs b/vendor/gix-hash/src/oid.rs
index 20d4fb4b6..45380caff 100644
--- a/vendor/gix-hash/src/oid.rs
+++ b/vendor/gix-hash/src/oid.rs
@@ -11,7 +11,7 @@ use crate::{ObjectId, SIZE_OF_SHA1_DIGEST};
 /// internal `bytes` slice length (a fat pointer, pointing to data and its length in bytes)
 /// to encode additional information. Before accessing or returning the bytes, a new adjusted
 /// slice will be constructed, while the high bits will be used to help resolving the
-/// hash `[`kind()`][oid::kind()]`.
+/// hash [`kind()`][oid::kind()].
 /// We expect to have quite a few bits available for such 'conflict resolution' as most hashes aren't longer
 /// than 64 bytes.
 #[derive(PartialEq, Eq, Ord, PartialOrd)]
@@ -102,13 +102,13 @@ impl oid {
 
 /// Access
 impl oid {
-    /// The kind of hash used for this Digest.
+    /// The kind of hash used for this instance.
     #[inline]
     pub fn kind(&self) -> crate::Kind {
         crate::Kind::from_len_in_bytes(self.bytes.len())
     }
 
-    /// The first byte of the hash, commonly used to partition a set of `Id`s.
+    /// The first byte of the hash, commonly used to partition a set of object ids.
     #[inline]
     pub fn first_byte(&self) -> u8 {
         self.bytes[0]
@@ -206,7 +206,7 @@ impl PartialEq<crate::ObjectId> for &oid {
 
 /// Manually created from a version that uses a slice, and we forcefully try to convert it into a borrowed array of the desired size
 /// Could be improved by fitting this into serde.
-/// Unfortunately the serde::Deserialize derive wouldn't work for borrowed arrays.
+/// Unfortunately the `serde::Deserialize` derive wouldn't work for borrowed arrays.
 #[cfg(feature = "serde")]
 impl<'de: 'a, 'a> serde::Deserialize<'de> for &'a oid {
     fn deserialize<D>(deserializer: D) -> Result<Self, <D as serde::Deserializer<'de>>::Error>
diff --git a/vendor/gix-hash/src/prefix.rs b/vendor/gix-hash/src/prefix.rs
index a8b55922e..166b3c3e7 100644
--- a/vendor/gix-hash/src/prefix.rs
+++ b/vendor/gix-hash/src/prefix.rs
@@ -2,7 +2,7 @@ use std::{cmp::Ordering, convert::TryFrom};
 
 use crate::{oid, ObjectId, Prefix};
 
-/// The error returned by [Prefix::new()].
+/// The error returned by [`Prefix::new()`].
 #[derive(Debug, thiserror::Error)]
 #[allow(missing_docs)]
 pub enum Error {
@@ -17,7 +17,7 @@ pub enum Error {
 
 ///
 pub mod from_hex {
-    /// The error returned by [Prefix::from_hex][super::Prefix::from_hex()].
+    /// The error returned by [`Prefix::from_hex`][super::Prefix::from_hex()].
     #[derive(Debug, Eq, PartialEq, thiserror::Error)]
     #[allow(missing_docs)]
     pub enum Error {
@@ -110,7 +110,7 @@ impl Prefix {
             let mut buf = [0u8; crate::Kind::longest().len_in_hex()];
             buf[..value.len()].copy_from_slice(value.as_bytes());
             buf[value.len()] = b'0';
-            Vec::from_hex(&buf[..value.len() + 1])
+            Vec::from_hex(&buf[..=value.len()])
         }
         .map_err(|e| match e {
             hex::FromHexError::InvalidHexCharacter { c, index } => from_hex::Error::Invalid { c, index },