diff -r 88362b8bc476 -r 17a86f650059 mercurial/scmutil.py
--- a/mercurial/scmutil.py	Fri Feb 03 01:04:22 2023 +0100
+++ b/mercurial/scmutil.py	Fri Feb 03 01:05:41 2023 +0100
@@ -1066,7 +1066,7 @@
         return
 
     # translate mapping's other forms
-    if not util.safehasattr(replacements, b'items'):
+    if not util.safehasattr(replacements, 'items'):
         replacements = {(n,): () for n in replacements}
     else:
         # upgrading non tuple "source" to tuple ones for BC