diff -r f70ce1aedbcb -r 498afb627f78 mercurial/revlogutils/rewrite.py
--- a/mercurial/revlogutils/rewrite.py	Tue Oct 10 10:01:57 2023 +0200
+++ b/mercurial/revlogutils/rewrite.py	Tue Oct 10 10:02:05 2023 +0200
@@ -75,7 +75,7 @@
     )
     newrl._format_version = rl._format_version
     newrl._format_flags = rl._format_flags
-    newrl._generaldelta = rl._generaldelta
+    newrl.delta_config.general_delta = rl._generaldelta
     newrl._parse_index = rl._parse_index
 
     for rev in rl.revs():