--- a/mercurial/smartset.py	Thu Feb 02 17:35:38 2023 +0100
+++ b/mercurial/smartset.py	Thu Feb 02 17:35:47 2023 +0100
@@ -1127,7 +1127,7 @@
         This boldly assumes the other contains valid revs only.
         """
         # other not a smartset, make is so
-        if not util.safehasattr(other, b'isascending'):
+        if not util.safehasattr(other, 'isascending'):
             # filter out hidden revision
             # (this boldly assumes all smartset are pure)
             #