diff --git a/mercurial/context.py b/mercurial/context.py
--- a/mercurial/context.py
+++ b/mercurial/context.py
@@ -2218,7 +2218,7 @@
         ]
 
     def p1copies(self):
-        copies = self._repo._wrappedctx.p1copies().copy()
+        copies = {}
         narrowmatch = self._repo.narrowmatch()
         for f in self._cache.keys():
             if not narrowmatch(f):
@@ -2230,7 +2230,7 @@
         return copies
 
     def p2copies(self):
-        copies = self._repo._wrappedctx.p2copies().copy()
+        copies = {}
         narrowmatch = self._repo.narrowmatch()
         for f in self._cache.keys():
             if not narrowmatch(f):