--- a/mercurial/revlogutils/nodemap.py	Thu Jul 18 12:03:29 2024 +0200
+++ b/mercurial/revlogutils/nodemap.py	Thu Jul 18 12:36:12 2024 +0200
@@ -553,7 +553,7 @@
 
     Children blocks are always yield before their parent block.
     """
-    for (__, item) in sorted(block.items()):
+    for __, item in sorted(block.items()):
         if isinstance(item, dict):
             for sub_block in _walk_trie(item):
                 yield sub_block