def get_branch_origin(self):
        root_and_path = fs.closest_copy(self.root, self._scoped_path_utf8)
        if root_and_path:
            return fs.revision_root_revision(root_and_path[0])
Return the revision in which the node's path was created.
dataset/ETHPy150Open edgewall/trac/tracopt/versioncontrol/svn/svn_fs.py/SubversionNode.get_branch_origin