def post_clear_cache(func: Callable[..., _T]) -> Callable[..., _T]:
    """Decorator for functions that alter the index using the git command.

    When a git command alters the index, this invalidates our possibly existing entries
    dictionary, which is why it must be deleted to allow it to be lazily reread later.
    """

    @wraps(func)
    def post_clear_cache_if_not_raised(self: "IndexFile", *args: Any, **kwargs: Any) -> _T:
        rval = func(self, *args, **kwargs)
        self._delete_entries_cache()
        return rval

    # END wrapper method

    return post_clear_cache_if_not_raised
Decorator for functions that alter the index using the git command.

    When a git command alters the index, this invalidates our possibly existing entries
    dictionary, which is why it must be deleted to allow it to be lazily reread later.
    
git/index/util.py