diff --git a/src/applications/diffusion/engine/DiffusionCommitHookEngine.php b/src/applications/diffusion/engine/DiffusionCommitHookEngine.php
--- a/src/applications/diffusion/engine/DiffusionCommitHookEngine.php
+++ b/src/applications/diffusion/engine/DiffusionCommitHookEngine.php
@@ -216,13 +216,7 @@
     $event->setRejectCode($this->rejectCode);
     $event->setRejectDetails($this->rejectDetails);
 
-    $event->openTransaction();
-      $event->save();
-      foreach ($all_updates as $update) {
-        $update->setPushEventPHID($event->getPHID());
-        $update->save();
-      }
-    $event->saveTransaction();
+    $event->saveWithLogs($all_updates);
 
     if ($caught) {
       throw $caught;
diff --git a/src/applications/diffusion/protocol/DiffusionRepositoryClusterEngine.php b/src/applications/diffusion/protocol/DiffusionRepositoryClusterEngine.php
--- a/src/applications/diffusion/protocol/DiffusionRepositoryClusterEngine.php
+++ b/src/applications/diffusion/protocol/DiffusionRepositoryClusterEngine.php
@@ -901,4 +901,41 @@
         new PhutilNumber($duration)));
   }
 
+  public function newMaintenanceEvent() {
+    $viewer = $this->getViewer();
+    $repository = $this->getRepository();
+    $now = PhabricatorTime::getNow();
+
+    $event = PhabricatorRepositoryPushEvent::initializeNewEvent($viewer)
+      ->setRepositoryPHID($repository->getPHID())
+      ->setEpoch($now)
+      ->setPusherPHID($this->getEffectiveActingAsPHID())
+      ->setRejectCode(PhabricatorRepositoryPushLog::REJECT_ACCEPT);
+
+    return $event;
+  }
+
+  public function newMaintenanceLog() {
+    $viewer = $this->getViewer();
+    $repository = $this->getRepository();
+    $now = PhabricatorTime::getNow();
+
+    $device = AlmanacKeys::getLiveDevice();
+    if ($device) {
+      $device_phid = $device->getPHID();
+    } else {
+      $device_phid = null;
+    }
+
+    return PhabricatorRepositoryPushLog::initializeNewLog($viewer)
+      ->setDevicePHID($device_phid)
+      ->setRepositoryPHID($repository->getPHID())
+      ->attachRepository($repository)
+      ->setEpoch($now)
+      ->setPusherPHID($this->getEffectiveActingAsPHID())
+      ->setChangeFlags(PhabricatorRepositoryPushLog::CHANGEFLAG_MAINTENANCE)
+      ->setRefType(PhabricatorRepositoryPushLog::REFTYPE_MAINTENANCE)
+      ->setRefNew('');
+  }
+
 }
diff --git a/src/applications/repository/storage/PhabricatorRepositoryPushEvent.php b/src/applications/repository/storage/PhabricatorRepositoryPushEvent.php
--- a/src/applications/repository/storage/PhabricatorRepositoryPushEvent.php
+++ b/src/applications/repository/storage/PhabricatorRepositoryPushEvent.php
@@ -81,6 +81,21 @@
     return $this->assertAttached($this->logs);
   }
 
+  public function saveWithLogs(array $logs) {
+    assert_instances_of($logs, 'PhabricatorRepositoryPushLog');
+
+    $this->openTransaction();
+      $this->save();
+      foreach ($logs as $log) {
+        $log->setPushEventPHID($this->getPHID());
+        $log->save();
+      }
+    $this->saveTransaction();
+
+    $this->attachLogs($logs);
+
+    return $this;
+  }
 
 /* -(  PhabricatorPolicyInterface  )----------------------------------------- */
 
diff --git a/src/applications/repository/storage/PhabricatorRepositoryPushLog.php b/src/applications/repository/storage/PhabricatorRepositoryPushLog.php
--- a/src/applications/repository/storage/PhabricatorRepositoryPushLog.php
+++ b/src/applications/repository/storage/PhabricatorRepositoryPushLog.php
@@ -18,6 +18,7 @@
   const REFTYPE_BOOKMARK = 'bookmark';
   const REFTYPE_COMMIT = 'commit';
   const REFTYPE_REF = 'ref';
+  const REFTYPE_MAINTENANCE = 'maintenance';
 
   const CHANGEFLAG_ADD = 1;
   const CHANGEFLAG_DELETE = 2;
@@ -27,6 +28,7 @@
   const CHANGEFLAG_ENORMOUS = 32;
   const CHANGEFLAG_OVERSIZED = 64;
   const CHANGEFLAG_TOUCHES = 128;
+  const CHANGEFLAG_MAINTENANCE = 256;
 
   const REJECT_ACCEPT = 0;
   const REJECT_DANGEROUS = 1;
@@ -70,6 +72,7 @@
       self::CHANGEFLAG_ENORMOUS => pht('Enormous'),
       self::CHANGEFLAG_OVERSIZED => pht('Oversized'),
       self::CHANGEFLAG_TOUCHES => pht('Touches Too Many Paths'),
+      self::CHANGEFLAG_MAINTENANCE => pht('Maintenance'),
     );
   }