diff -r cc677803bad4 -r 503bb3af70fe mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Thu Aug 15 15:23:36 2013 -0500
+++ b/mercurial/cmdutil.py	Thu Aug 15 16:49:27 2013 -0500
@@ -2057,7 +2057,8 @@
                     try:
                         fctx = ctx[path]
                         flags = fctx.flags()
-                        mctx = context.memfilectx(fctx.path(), fctx.data(),
+                        mctx = context.memfilectx(repo,
+                                                  fctx.path(), fctx.data(),
                                                   islink='l' in flags,
                                                   isexec='x' in flags,
                                                   copied=copied.get(path))