def git_remote(self):
        """
        If the distribution is installed via git, return the first URL of the
        'origin' remote if one is configured for the repo, or else the first
        URL of the lexicographically-first remote, or else None.

        :return: origin or first remote URL
        :rtype: :py:obj:`str` or :py:data:`None`
        """
        if self._git_remotes is None or len(self._git_remotes) < 1:
            return None
        if 'origin' in self._git_remotes:
            return self._git_remotes['origin']
        k = sorted(self._git_remotes.keys())[0]
        return self._git_remotes[k]