pub fn git_common_dir(cwd: &Path) -> Result<PathBuf, Error>Expand description
Path to the shared .git directory of the repository containing
cwd. Equivalent to git_dir in repos without linked worktrees;
in worktree-having repos it always returns the main .git/ rather
than the per-worktree subtree.
Use this for anything stored once per repo: object database,
objects/info/alternates, default hooks, and the LFS object cache
at .git/lfs/. Mirrors upstream’s git.GitCommonDir() /
Configuration.LocalGitStorageDir().