--- a/mercurial/dirstate.py	Tue Sep 14 18:25:51 2021 +0200
+++ b/mercurial/dirstate.py	Thu Sep 02 02:44:12 2021 +0200
@@ -749,7 +749,6 @@
         if self._map.dropfile(filename):
             self._dirty = True
             self._updatedfiles.add(filename)
-            self._map.copymap.pop(filename, None)
 
     def _discoverpath(self, path, normed, ignoremissing, exists, storemap):
         if exists is None: