go-git is an extensible git implementation library written in pure Go. Prior to 5.19.2 and 6.0.0-alpha.5, reference names are not sanitized before being used to construct on-disk paths under the reference storage directory, so a maliciously crafted reference name (for example containing directory-traversal sequences) can cause go-git to write files outside the intended reference storage directory. Versions 5.19.2 and 6.0.0-alpha.5 fix the issue.
https://github.com/go-git/go-git/security/advisories/GHSA-qgq7-7hm3-q39j
https://github.com/go-git/go-git/releases/tag/v6.0.0-alpha.5
https://github.com/go-git/go-git/releases/tag/v5.19.2
https://github.com/go-git/go-git/pull/2254
https://github.com/go-git/go-git/pull/2247
https://github.com/go-git/go-git/commit/da9f7d8a0e98b475600177348d6ece384a370f36
https://github.com/go-git/go-git/commit/4a0e66d555de5f9a30c31e2df64f445f42bd01e7