docs: def find_tags(self):
          """Find information about the tags in the repository."""
          listing = self.context.capture('git', 'show-ref', '--tags', check=False)
          for line in listing.splitlines():
              tokens = line.split()
              if len(tokens) >= 2 and tokens[1].startswith('refs/tags/'):
                  yield Revision(
                      repository=self,
                      revision_id=tokens[0],
                      tag=tokens[1][len('refs/tags/'):],
                  )