diff -r 17a86f650059 -r 2704dc40cf10 mercurial/debugcommands.py
--- a/mercurial/debugcommands.py	Fri Feb 03 01:05:41 2023 +0100
+++ b/mercurial/debugcommands.py	Fri Feb 03 02:57:49 2023 +0100
@@ -1718,7 +1718,7 @@
     if fm.isplain():
 
         def formatvalue(value):
-            if util.safehasattr(value, b'startswith'):
+            if util.safehasattr(value, 'startswith'):
                 return value
             if value:
                 return b'yes'