code: def read_git_commit_timestamp(repo_path=None):
      
      repo = git.repo.base.Repo(path=repo_path, search_parent_directories=True)
      head_commit = repo.head.commit
      return head_commit.committed_datetime
docs: Obtain the timestamp from the current head commit of a Git repository.
  
      Parameters
      ----------
      repo_path : `str`, optional
          Path to the Git repository. Leave as `None` to use the current working
          directory.
  
      Returns
      -------
      commit_timestamp : `datetime.datetime`
          The datetime of the head commit.