Does not work with git worktree

[davireis]

Working directories created with https://git-scm.com/docs/git-worktree unfortunately use a .git file whose contents is the path of the real .git directory, and that breaks the check maven-git-commit-id does. The only workaround I found was to set failOnUnableToExtractRepoInfo. Ideally, maven-git-commit-id should use git itself to verify existence and query data in the .git dir.

[ktoso]

Thanks for the ticket, I'm not actively maintaining this repo so it would be best if you try to submit a PR. I'm happy to review / merge then etc,

[TheSnoozer]

Not to be picky but this is pretty much a duplicate of
#215