Bump git2 from 0.18.3 to 0.20.2

[dependabot]

Bumps git2 from 0.18.3 to 0.20.2.

Changelog

Sourced from git2's changelog.

0.20.2 - 2025-05-05

0.20.1...0.20.2

Added

• Added Status::WT_UNREADABLE. #1151

Fixed

• Added missing codes for GIT_EDIRECTORY, GIT_EMERGECONFLICT, GIT_EUNCHANGED, GIT_ENOTSUPPORTED, and GIT_EREADONLY to Error::raw_code. #1153
• Fixed missing initialization in Indexer::new. #1160

0.20.1 - 2025-03-17

0.20.0...0.20.1

Added

• Added Repository::branch_upstream_merge() #1131
• Added Index::conflict_get() #1134
• Added Index::conflict_remove() #1133
• Added opts::set_cache_object_limit() #1118
• Added Repo::merge_file_from_index() and associated MergeFileOptions and MergeFileResult. #1062

Changed

• The url dependency minimum raised to 2.5.4 #1128
• Changed the tracing callback to abort the process if the callback panics instead of randomly detecting the panic in some other function. #1121
• Credential helper config (loaded with CredentialHelper::config) now checks for helpers that start with something that looks like an absolute path, rather than checking for a / or \ anywhere in the helper string (which resolves an issue if the helper had arguments with / or \). #1137

Fixed

• Fixed panic in Remote::url_bytes if the url is empty. #1120
• Fixed incorrect lifetimes on Patch::delta, Patch::hunk, and Patch::line_in_hunk. The return values must not outlive the Patch. #1141
• Bumped requirement to libgit2-sys 0.18.1, which fixes linking of advapi32 on Windows. #1143

... (truncated)

Commits

• 1fb5f64 Merge pull request #1161 from ehuss/bump-version
• 26bfd30 Update version of git2 to 0.20.2
• eef4592 Merge pull request #1160 from ehuss/indexer-init
• 7f42b7a Clarify Indexer::new path parameter
• 1774e57 Call init in Indexer::new
• 5bc3baa Merge pull request #1155 from reddevilmidzy/master
• ba5e1b3 Make link an intra-doc link
• 38681b1 fix: add a backtick
• b82f801 Merge pull request #1153 from alyssais/raw_code
• 00faf61 Add missing code checks to Error::raw_code()
• Additional commits viewable in compare view

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[greptile-apps]

Greptile Overview

Summary

This dependency bump updates git2 from 0.18.3 to 0.20.2, bringing bug fixes and improvements without breaking API changes.

Key changes:

• Updated git2 dependency from 0.18.3 to 0.20.2
• Updated libgit2-sys from 0.16.2+1.7.2 to 0.18.2+1.9.1
• Includes important fixes: Windows advapi32 linking issue, Indexer::new initialization bug, and missing error codes
• All existing git2 API usage in the codebase remains compatible (Repository operations, RevWalk, TreeWalk, etc.)
• The upgrade provides enhanced stability and security through the underlying libgit2 improvements

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• Score reflects a straightforward dependency update with backward-compatible API and important bug fixes. All git2 APIs used in the codebase (Repository::open, RevWalk, TreeWalk, ObjectType checks) remain unchanged between versions.
• No files require special attention

Important Files Changed

File Analysis

Filename	Score	Overview
Cargo.toml	5/5	Updated git2 dependency from 0.18.2 to 0.20.2 with same features
Cargo.lock	5/5	Updated checksums and versions for git2 (0.18.3→0.20.2) and libgit2-sys (0.16.2→0.18.2) dependencies

Sequence Diagram

sequenceDiagram
    participant Dev as Developer
    participant Dep as Dependabot
    participant Git2 as git2 Library
    participant LibGit as libgit2-sys
    participant Code as Yek Codebase
    
    Note over Dep: Detects outdated dependency
    Dep->>Dev: Creates PR #219
    Dev->>Git2: Upgrade from 0.18.3 to 0.20.2
    Git2->>LibGit: Updates underlying libgit2-sys
    LibGit->>LibGit: 0.16.2 → 0.18.2 (includes advapi32 fix)
    
    Note over Code: API compatibility check
    Code->>Git2: Repository::open()
    Code->>Git2: RevWalk operations
    Code->>Git2: TreeWalk with PreOrder mode
    Code->>Git2: ObjectType::Blob checks
    
    Note over Git2: All APIs remain compatible
    Git2-->>Code: Success (backward compatible)
    
    Note over Dev: Review and merge
    Dev->>Dep: Approve dependency update

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