Create a branch of this repo at 'name'.

        :param name: Name of new branch
        :param desc: Repo description.

        :return: New Local instance.

def branch(self, name, desc=None):
        """
        Create a branch of this repo at 'name'.

        :param name: Name of new branch
        :param desc: Repo description.

        :return: New Local instance.
        """
        return Local.new(path=os.path.join(self.path, name), desc=desc, bare=True)