docs: def insert_hash(path: Path, content: Union[str, bytes], *, hash_length=7, hash_algorithm=hashlib.md5):
      """
      Insert a hash based on the content into the path after the first dot.
  
      hash_length 7 matches git commit short references
      """
      if isinstance(content, str):
          content = content.encode()
      hash_ = hash_algorithm(content).hexdigest()[:hash_length]
      if '.' in path.name:
          new_name = re.sub(r'\.', f'.{hash_}.', path.name, count=1)
      else:
          new_name = f'{path.name}.{hash_}'
      return path.with_name(new_name)