gifn-apply: minor refactoring re: TYPE_CHECKING

Change-Id: Ie6909010e27107aaa0ee4bca1eeca8b68776d4da
diff --git a/tools/git-if-needed/python/gifn_apply/defs.py b/tools/git-if-needed/python/gifn_apply/defs.py
index e5971f3..7809b1c 100644
--- a/tools/git-if-needed/python/gifn_apply/defs.py
+++ b/tools/git-if-needed/python/gifn_apply/defs.py
@@ -5,10 +5,10 @@
 from __future__ import annotations
 
 import dataclasses
-from typing import TYPE_CHECKING
+import typing
 
 
-if TYPE_CHECKING:
+if typing.TYPE_CHECKING:
     import logging
     import pathlib
     import urllib.parse as uparse