No valid git object identified by 'refs/remotes/origin/HEAD' exists in the repository.

[Chaosmeister]

In GetBranchesContainingCommit()
my 'refs/remotes/origin/HEAD' is evaluated as well but commits.Reference.Target is null and if (!commits.Any()) will then throw an exception.

I don't really know how I got it like this.

[Chaosmeister]

after switching between another branch and the branch with the issue a few times, the issue disappeared.

[asbjornu]

Ok, great! Closing.