class_docstr: Manages git log entries from a specific branch/tag
  
  Can compare git log entries by PR number
code: def git_ref(self) -> str:
      return self._git_ref
  
imports: import csv
  import os
  import re
  import sys
  from collections.abc import Iterator
  from dataclasses import dataclass
  from typing import Any, Optional, Union
  import click
  from click.core import Context
label_desc: Use image node_id 2 for calling the GitLogs obj's underlying member method code with example usage: obj.git_ref() and returns: self