--- a/mercurial/scmutil.py	Thu Jan 16 08:41:38 2020 -0800
+++ b/mercurial/scmutil.py	Sun Nov 17 14:39:28 2019 +0100
@@ -1466,6 +1466,7 @@
         if src not in newctx or dst in newctx or ds[dst] != b'a':
             src = None
         ds.copy(src, dst)
+    repo._quick_access_changeid_invalidate()
 
 
 def writerequires(opener, requirements):