docs: def get_git_refs(self):
          """
          :calls: `GET /repos/:owner/:repo/git/refs <http://developer.github.com/v3/git/refs>`_
          :rtype: :class:`github.PaginatedList.PaginatedList` of :class:`github.GitRef.GitRef`
          """
          return github.PaginatedList.PaginatedList(
              github.GitRef.GitRef,
              self._requester,
              self.url + "/git/refs",
              None
          )