diff --git a/hgext3rd/fbamend/common.py b/hgext3rd/fbamend/common.py
--- a/hgext3rd/fbamend/common.py
+++ b/hgext3rd/fbamend/common.py
@@ -149,7 +149,7 @@
             if path in headmf:
                 fctx = head[path]
                 flags = fctx.flags()
-                mctx = context.memfilectx(repo, fctx.path(), fctx.data(),
+                mctx = context.memfilectx(repo, ctx, fctx.path(), fctx.data(),
                                           islink='l' in flags,
                                           isexec='x' in flags,
                                           copied=copied.get(path))
diff --git a/hgext3rd/pushrebase.py b/hgext3rd/pushrebase.py
--- a/hgext3rd/pushrebase.py
+++ b/hgext3rd/pushrebase.py
@@ -657,7 +657,7 @@
             copied = fctx.renamed()
             if copied:
                 copied = copied[0]
-            return context.memfilectx(repo, fctx.path(), fctx.data(),
+            return context.memfilectx(repo, memctx, fctx.path(), fctx.data(),
                               islink='l' in flags,
                               isexec='x' in flags,
                               copied=copied)