diff --git a/src/workflow/ArcanistWorkflow.php b/src/workflow/ArcanistWorkflow.php
--- a/src/workflow/ArcanistWorkflow.php
+++ b/src/workflow/ArcanistWorkflow.php
@@ -1172,19 +1172,26 @@
     return $this->loadBundleFromConduit(
       $conduit,
       array(
-      'ids' => array($diff_id),
-    ));
+        'ids' => array($diff_id),
+      ));
   }
 
   final protected function loadRevisionBundleFromConduit(
     ConduitClient $conduit,
     $revision_id) {
 
+    $future = $conduit->callMethod(
+      'differential.query',
+      array(
+        'ids' => array($revision_id),
+      ));
+    $revision = head($future->resolve());
+
     return $this->loadBundleFromConduit(
       $conduit,
       array(
-      'revisionIDs' => array($revision_id),
-    ));
+        'ids' => array(head($revision['diffs'])),
+      ));
   }
 
   final private function loadBundleFromConduit(