Rollout Git version v2.47.0

Changelog

https://gitlab.com/gl-gitaly/blogposts/-/merge_requests/4/

Steps

Introducing a new Git version

• Add the new bundled Git version in the Makefile (Reference).
  • Update the build-bundled-git and install-bundled-git targets as necessary.
  • For a minor version bumps and above, add a new target under the # These targets build specific releases of Git. section corresponding to the new version.
• Introduce the new bundled Git execution environment in the Git package behind a feature flag.
  • Create an issue for the rollout of the feature flag (Reference).
  • Optional: Create a change request in case the new Git version contains changes that may cause issues.
  • Roll out the feature flag.
  • Once the upgrade is deemed stable, remove the feature flag. You can do this in any release, including the release that adds the feature flag.

Removing an old Git version

• Remove the old bundled Git version from the Makefile
  • Update the build-bundled-git and install-bundled-git targets as necessary.
  • Remove any unused targets under the # These targets build specific releases of Git. section corresponding to the old version.
• Remove the old bundled Git execution environment from the Git package.

Upgrading the minimum required Git version

Optional: This is only needed when we want to start using features that have been introduced with the new Git version.

• Update the minimum required Git version in the Git package. (Reference)
• Update the minimum required Git version in the README.md.
• Update the GitLab release notes to reflect the new minimum required Git version. (Reference.