--- a/mercurial/ancestor.py	Mon Jul 22 16:49:38 2024 +0200
+++ b/mercurial/ancestor.py	Tue Jul 23 10:02:46 2024 +0200
@@ -88,7 +88,7 @@
         depth = [0] * count
         seen = [0] * count
         mapping = []
-        for i, n in enumerate(sorted(nodes)):
+        for (i, n) in enumerate(sorted(nodes)):
             depth[n] = 1
             b = 1 << i
             seen[n] = b