def get_previous_commit(self, commit_ref, n=None):
commit_sha = self._parse_reference(commit_ref)
n = n or 1
commits = self.commits()
return funky.next(commits, commit_sha, n=n, default=commit_sha)
def get_previous_commit(self, commit_ref, n=None):
commit_sha = self._parse_reference(commit_ref)
n = n or 1
commits = self.commits()
return funky.next(commits, commit_sha, n=n, default=commit_sha)
