--- a/mercurial/configitems.py	Wed Dec 20 16:30:32 2023 +0100
+++ b/mercurial/configitems.py	Tue Dec 19 21:26:30 2023 +0100
@@ -82,7 +82,7 @@
         super(itemregister, self).__init__()
         self._generics = set()
 
-    def update(self, other):
+    def update(self, other):  # pytype: disable=signature-mismatch
         super(itemregister, self).update(other)
         self._generics.update(other._generics)