Index: src/applications/diffusion/herald/HeraldPreCommitContentAdapter.php
===================================================================
--- src/applications/diffusion/herald/HeraldPreCommitContentAdapter.php
+++ src/applications/diffusion/herald/HeraldPreCommitContentAdapter.php
@@ -6,6 +6,8 @@
   private $hookEngine;
   private $changesets;
   private $commitRef;
+  private $fields;
+  private $revision = false;
 
   public function setPushLog(PhabricatorRepositoryPushLog $log) {
     $this->log = $log;
@@ -47,6 +49,9 @@
         self::FIELD_REPOSITORY,
         self::FIELD_PUSHER,
         self::FIELD_PUSHER_PROJECTS,
+        self::FIELD_DIFFERENTIAL_REVISION,
+        self::FIELD_DIFFERENTIAL_REVIEWERS,
+        self::FIELD_DIFFERENTIAL_CCS,
         self::FIELD_RULE,
       ),
       parent::getFields());
@@ -107,6 +112,24 @@
         return $this->hookEngine->getViewer()->getPHID();
       case self::FIELD_PUSHER_PROJECTS:
         return $this->hookEngine->loadViewerProjectPHIDsForHerald();
+      case self::FIELD_DIFFERENTIAL_REVISION:
+        $revision = $this->getRevision();
+        if (!$revision) {
+          return null;
+        }
+        return $revision->getPHID();
+      case self::FIELD_DIFFERENTIAL_REVIEWERS:
+        $revision = $this->getRevision();
+        if (!$revision) {
+          return array();
+        }
+        return $revision->getReviewers();
+      case self::FIELD_DIFFERENTIAL_CCS:
+        $revision = $this->getRevision();
+        if (!$revision) {
+          return array();
+        }
+        return $revision->getCCPHIDs();
     }
 
     return parent::getHeraldField($field);
@@ -244,4 +267,32 @@
       ->execute();
   }
 
+  private function getCommitFields() {
+    if ($this->fields === null) {
+      $this->fields = id(new DiffusionLowLevelCommitFieldsQuery())
+        ->setRepository($this->hookEngine->getRepository())
+        ->withCommitRef($this->getCommitRef())
+        ->execute();
+    }
+    return $this->fields;
+  }
+
+  private function getRevision() {
+    if ($this->revision === false) {
+      $fields = $this->getCommitFields();
+      $revision_id = idx($fields, 'revisionID');
+      if (!$revision_id) {
+        $this->revision = null;
+      } else {
+        $this->revision = id(new DifferentialRevisionQuery())
+          ->setViewer(PhabricatorUser::getOmnipotentUser())
+          ->withIDs(array($revision_id))
+          ->needRelationships(true)
+          ->executeOne();
+      }
+    }
+
+    return $this->revision;
+  }
+
 }
Index: src/applications/herald/adapter/HeraldAdapter.php
===================================================================
--- src/applications/herald/adapter/HeraldAdapter.php
+++ src/applications/herald/adapter/HeraldAdapter.php
@@ -27,6 +27,9 @@
   const FIELD_PROJECTS               = 'projects';
   const FIELD_PUSHER                 = 'pusher';
   const FIELD_PUSHER_PROJECTS        = 'pusher-projects';
+  const FIELD_DIFFERENTIAL_REVISION  = 'differential-revision';
+  const FIELD_DIFFERENTIAL_REVIEWERS = 'differential-reviewers';
+  const FIELD_DIFFERENTIAL_CCS       = 'differential-ccs';
 
   const CONDITION_CONTAINS        = 'contains';
   const CONDITION_NOT_CONTAINS    = '!contains';
@@ -163,6 +166,9 @@
       self::FIELD_PROJECTS => pht("Projects"),
       self::FIELD_PUSHER => pht('Pusher'),
       self::FIELD_PUSHER_PROJECTS => pht("Pusher's projects"),
+      self::FIELD_DIFFERENTIAL_REVISION => pht('Differential revision'),
+      self::FIELD_DIFFERENTIAL_REVIEWERS => pht('Differential reviewers'),
+      self::FIELD_DIFFERENTIAL_CCS => pht('Differential CCs'),
     );
   }
 
@@ -263,6 +269,25 @@
         return array(
           self::CONDITION_UNCONDITIONALLY,
         );
+      case self::FIELD_DIFFERENTIAL_REVIEWERS:
+        return array(
+          self::CONDITION_EXISTS,
+          self::CONDITION_NOT_EXISTS,
+          self::CONDITION_INCLUDE_ALL,
+          self::CONDITION_INCLUDE_ANY,
+          self::CONDITION_INCLUDE_NONE,
+        );
+      case self::FIELD_DIFFERENTIAL_CCS:
+        return array(
+          self::CONDITION_INCLUDE_ALL,
+          self::CONDITION_INCLUDE_ANY,
+          self::CONDITION_INCLUDE_NONE,
+        );
+      case self::FIELD_DIFFERENTIAL_REVISION:
+        return array(
+          self::CONDITION_EXISTS,
+          self::CONDITION_NOT_EXISTS,
+        );
       default:
         throw new Exception(
           "This adapter does not define conditions for field '{$field}'!");
Index: src/applications/herald/adapter/HeraldCommitAdapter.php
===================================================================
--- src/applications/herald/adapter/HeraldCommitAdapter.php
+++ src/applications/herald/adapter/HeraldCommitAdapter.php
@@ -6,9 +6,6 @@
 final class HeraldCommitAdapter extends HeraldAdapter {
 
   const FIELD_NEED_AUDIT_FOR_PACKAGE      = 'need-audit-for-package';
-  const FIELD_DIFFERENTIAL_REVISION       = 'differential-revision';
-  const FIELD_DIFFERENTIAL_REVIEWERS      = 'differential-reviewers';
-  const FIELD_DIFFERENTIAL_CCS            = 'differential-ccs';
   const FIELD_REPOSITORY_AUTOCLOSE_BRANCH = 'repository-autoclose-branch';
 
   protected $diff;
@@ -49,9 +46,6 @@
     return array(
       self::FIELD_NEED_AUDIT_FOR_PACKAGE =>
         pht('Affected packages that need audit'),
-      self::FIELD_DIFFERENTIAL_REVISION => pht('Differential revision'),
-      self::FIELD_DIFFERENTIAL_REVIEWERS => pht('Differential reviewers'),
-      self::FIELD_DIFFERENTIAL_CCS => pht('Differential CCs'),
       self::FIELD_REPOSITORY_AUTOCLOSE_BRANCH => pht('On autoclose branch'),
     ) + parent::getFieldNameMap();
   }
@@ -82,25 +76,6 @@
 
   public function getConditionsForField($field) {
     switch ($field) {
-      case self::FIELD_DIFFERENTIAL_REVIEWERS:
-        return array(
-          self::CONDITION_EXISTS,
-          self::CONDITION_NOT_EXISTS,
-          self::CONDITION_INCLUDE_ALL,
-          self::CONDITION_INCLUDE_ANY,
-          self::CONDITION_INCLUDE_NONE,
-        );
-      case self::FIELD_DIFFERENTIAL_CCS:
-        return array(
-          self::CONDITION_INCLUDE_ALL,
-          self::CONDITION_INCLUDE_ANY,
-          self::CONDITION_INCLUDE_NONE,
-        );
-      case self::FIELD_DIFFERENTIAL_REVISION:
-        return array(
-          self::CONDITION_EXISTS,
-          self::CONDITION_NOT_EXISTS,
-        );
       case self::FIELD_NEED_AUDIT_FOR_PACKAGE:
         return array(
           self::CONDITION_INCLUDE_ANY,