diff -r ab7b4fba8bde -r abc327f9628b contrib/synthrepo.py
--- a/contrib/synthrepo.py	Mon Jan 06 01:06:59 2025 -0500
+++ b/contrib/synthrepo.py	Mon Jan 06 01:12:54 2025 -0500
@@ -76,7 +76,7 @@
 
 
 def zerodict():
-    return collections.defaultdict(lambda: 0)
+    return collections.defaultdict(int)
 
 
 def roundto(x, k):