Index: oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/memory/MemoryNodeBuilder.java
===================================================================
--- oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/memory/MemoryNodeBuilder.java	(revision 1704857)
+++ oak-core/src/main/java/org/apache/jackrabbit/oak/plugins/memory/MemoryNodeBuilder.java	(working copy)
@@ -676,7 +676,8 @@
             MutableNodeState state =
                     parentState.getMutableChildNode(builder.name);
             // triggers a head state transition at next access
-            return new ConnectedHead(builder, state).getMutableNodeState();
+            builder.rootHead.revision++;
+            return state;
         }
 
         @Override