diff --git a/tpl/macro.twig b/tpl/macro.twig
index 164bf85..747189e 100644
--- a/tpl/macro.twig
+++ b/tpl/macro.twig
@@ -54,11 +54,16 @@ public {{_self.struct_type(o)}} {{o.name}} {{_self.base_struct_class(o)}}
   }
 
   {{_self.comment_non_cloneable_begin(o)}}
+  public void CloneTo(ref {{o.name}} dst)
+  {
+    MetaSync.Clone(this, ref dst, AutogenBundle.createById);
+  }
+
   public {{_self.virtual_clone(o)}} IMetaStruct clone()
   {
-    var copy = new {{o.name}}();
-    MetaSync.Clone(this, ref copy, AutogenBundle.createById);
-    return copy;
+    var dst = new {{o.name}}();
+    CloneTo(ref dst);
+    return dst;
   }
   {{_self.comment_non_cloneable_end(o)}}