code: def get_rev(self):
      from dvc.fs import GitFileSystem, LocalFileSystem
  
      assert self.scm
      if isinstance(self.fs, LocalFileSystem):
          from dvc.scm import map_scm_exception
  
          with map_scm_exception():
              return self.scm.get_rev()
      assert isinstance(self.fs, GitFileSystem)
      return self.fs.rev
  
imports: import os
  from collections import defaultdict
  from contextlib import contextmanager
  from functools import wraps
  from typing import TYPE_CHECKING, Callable, ContextManager, Iterable, Optional, Tuple, Union
  from dvc.exceptions import DvcException, NotDvcRepoError, OutputNotFoundError, RevCollectionError
  from dvc.ignore import DvcIgnoreFilter
  from dvc.log import logger
  from dvc.utils.objects import cached_property
label_desc: Use image node_id 13 for calling the Repo obj's underlying member method code with example usage: obj.get_rev() and returns: self, self