diff --git a/treemanifest/__init__.py b/treemanifest/__init__.py
--- a/treemanifest/__init__.py
+++ b/treemanifest/__init__.py
@@ -1592,7 +1592,7 @@
     def setshared(self, shared):
         self._shared = shared
 
-    def get(self, name, node):
+    def _gettrees(self, name, node):
         # Only look at the server if not root or is public
         basemfnodes = []
         if name == '':
@@ -1611,15 +1611,14 @@
 
         prefetchtrees(self._repo, name, [node], basemfnodes, [])
         self._shared.markforrefresh()
+
+    def get(self, name, node):
+        self._gettrees(name, node)
         return self._shared.get(name, node)
 
     def getdeltachain(self, name, node):
-        # Since our remote content stores just contain full texts, we return a
-        # fake delta chain that just consists of a single full text revision.
-        # The nullid in the deltabasenode slot indicates that the revision is a
-        # fulltext.
-        revision = self.get(name, node)
-        return [(name, node, None, nullid, revision)]
+        self._gettrees(name, node)
+        return self._shared.getdeltachain(name, node)
 
     def add(self, name, node, data):
         raise RuntimeError("cannot add to a remote store")