def __str__(self):

        return 'Commit {0}, revision {1} for {1}'.format(self.sha1_hash, self.rev, self.repo)
Look for link with specified rel, return else None
dataset/ETHPy150Open Djacket/djacket/core/backend/git/object.py/GitCommit.__str__--crossover with--dataset/ETHPy150Open resync/resync/resync/resource.py/Resource.link