diff -r a8fb29b05f92 -r 2d6aea053153 mercurial/interfaces/repository.py
--- a/mercurial/interfaces/repository.py	Wed Sep 16 21:00:02 2020 +0200
+++ b/mercurial/interfaces/repository.py	Thu Oct 01 09:29:49 2020 +0200
@@ -28,12 +28,14 @@
 REVISION_FLAG_ELLIPSIS = 1 << 14
 REVISION_FLAG_EXTSTORED = 1 << 13
 REVISION_FLAG_SIDEDATA = 1 << 12
+REVISION_FLAG_HASCOPIESINFO = 1 << 11
 
 REVISION_FLAGS_KNOWN = (
     REVISION_FLAG_CENSORED
     | REVISION_FLAG_ELLIPSIS
     | REVISION_FLAG_EXTSTORED
     | REVISION_FLAG_SIDEDATA
+    | REVISION_FLAG_HASCOPIESINFO
 )
 
 CG_DELTAMODE_STD = b'default'