diff -r 8de68446a5bd -r f4dd447e6efd mercurial/util.py
--- a/mercurial/util.py	Thu Feb 13 13:13:05 2025 +0100
+++ b/mercurial/util.py	Sat Feb 15 14:12:20 2025 +0100
@@ -1423,7 +1423,7 @@
     """
 
 
-class cowsortdict(cow, sortdict[_KT, _VT]):
+class cowsortdict(cow, sortdict):
     """copy-on-write sortdict
 
     Be sure to call d = d.preparewrite() before writing to d.