diff --git a/hgext/rebase.py b/hgext/rebase.py
--- a/hgext/rebase.py
+++ b/hgext/rebase.py
@@ -29,7 +29,6 @@
     bookmarks,
     cmdutil,
     commands,
-    copies,
     destutil,
     dirstateguard,
     error,
@@ -1477,13 +1476,6 @@
         repo, ctx, repo[base], labels=[b'dest', b'source'], wctx=wctx,
     )
     wctx.setparents(p1ctx.node(), repo[p2].node())
-    if collapse:
-        copies.graftcopies(wctx, ctx, repo[dest])
-    else:
-        # If we're not using --collapse, we need to
-        # duplicate copies between the revision we're
-        # rebasing and its first parent.
-        copies.graftcopies(wctx, ctx, ctx.p1())
     return stats