Just event, not event.push

.taskcluster.yml

@@ -12,7 +12,7 @@ tasks:
       metadata:
         name: "Taskcluster experiments for Servo"
         description: "Initial task"
-        owner: ${event.push.pusher.email}
+        owner: ${event.pusher.email}
         source: ${event.compare}
 
       routes:
@@ -30,8 +30,8 @@ tasks:
           - '--login'
           - '-c'
           - >-
-            git clone ${event.push.repository.clone_url} repo &&
+            git clone ${event.repository.clone_url} repo &&
             cd repo &&
-            git checkout ${event.push.after} &&
+            git checkout ${event.after} &&
             echo "Hello World!" &&
             ls