':calls: `GET /repos/:owner/:repo/branches/:branch <http://developer.github.com/v3/repos>`_
:param branch: string
:rtype: :class:`github.Branch.Branch`'

def get_branch(self, branch):

    assert isinstance(branch, (str, unicode)), branch
    (headers, data) = self._requester.requestJsonAndCheck('GET', ((self.url + '/branches/') + branch))
    return github.Branch.Branch(self._requester, headers, data, completed=True)
