code: def git_list_refs(repo_dir):
      
      command = ['git', 'show-ref', '--dereference', '--head']
      raw = execute_git_command(command, repo_dir=repo_dir).splitlines()
      output = [l.strip() for l in raw if l.strip()]
      return {ref: commit_hash for commit_hash, ref in
              [l.split(None, 1) for l in output]}
docs: List references available in the local repo with commit ids.
  
      This is similar to ls-remote, but shows the *local* refs.
  
      Return format:
  
      .. code-block:: python
  
          {<ref1>: <commit_hash1>,
           <ref2>: <commit_hash2>,
           ...,
           <refN>: <commit_hashN>,
          }