diff --git a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php
--- a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php
+++ b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryCommitMessageParserWorker.php
@@ -3,6 +3,41 @@
 abstract class PhabricatorRepositoryCommitMessageParserWorker
   extends PhabricatorRepositoryCommitParserWorker {
 
+  abstract protected function parseCommitWithRef(
+    PhabricatorRepository $repository,
+    PhabricatorRepositoryCommit $commit,
+    DiffusionCommitRef $ref);
+
+  final protected function parseCommit(
+    PhabricatorRepository $repository,
+    PhabricatorRepositoryCommit $commit) {
+
+    $viewer = PhabricatorUser::getOmnipotentUser();
+
+    $refs_raw = DiffusionQuery::callConduitWithDiffusionRequest(
+      $viewer,
+      DiffusionRequest::newFromDictionary(
+        array(
+          'repository' => $repository,
+          'user' => $viewer,
+        )),
+      'diffusion.querycommits',
+      array(
+        'phids' => array($commit->getPHID()),
+        'bypassCache' => true,
+        'needMessages' => true,
+      ));
+
+    if (empty($refs_raw['data'])) {
+      throw new Exception(
+        pht('Unable to retrieve details for commit "%s"!'));
+    }
+
+    $ref = DiffusionCommitRef::newFromConduitResult(head($refs_raw['data']));
+
+    $this->parseCommitWithRef($repository, $commit, $ref);
+  }
+
   final protected function updateCommitData(DiffusionCommitRef $ref) {
     $commit = $this->commit;
     $author = $ref->getAuthor();
diff --git a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryGitCommitMessageParserWorker.php b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryGitCommitMessageParserWorker.php
--- a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryGitCommitMessageParserWorker.php
+++ b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryGitCommitMessageParserWorker.php
@@ -3,14 +3,10 @@
 final class PhabricatorRepositoryGitCommitMessageParserWorker
   extends PhabricatorRepositoryCommitMessageParserWorker {
 
-  protected function parseCommit(
+  protected function parseCommitWithRef(
     PhabricatorRepository $repository,
-    PhabricatorRepositoryCommit $commit) {
-
-    $ref = id(new DiffusionLowLevelCommitQuery())
-      ->setRepository($repository)
-      ->withIdentifier($commit->getCommitIdentifier())
-      ->execute();
+    PhabricatorRepositoryCommit $commit,
+    DiffusionCommitRef $ref) {
 
     $this->updateCommitData($ref);
 
diff --git a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryMercurialCommitMessageParserWorker.php b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryMercurialCommitMessageParserWorker.php
--- a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryMercurialCommitMessageParserWorker.php
+++ b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositoryMercurialCommitMessageParserWorker.php
@@ -3,14 +3,10 @@
 final class PhabricatorRepositoryMercurialCommitMessageParserWorker
   extends PhabricatorRepositoryCommitMessageParserWorker {
 
-  protected function parseCommit(
+  protected function parseCommitWithRef(
     PhabricatorRepository $repository,
-    PhabricatorRepositoryCommit $commit) {
-
-    $ref = id(new DiffusionLowLevelCommitQuery())
-      ->setRepository($repository)
-      ->withIdentifier($commit->getCommitIdentifier())
-      ->execute();
+    PhabricatorRepositoryCommit $commit,
+    DiffusionCommitRef $ref) {
 
     $this->updateCommitData($ref);
 
diff --git a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositorySvnCommitMessageParserWorker.php b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositorySvnCommitMessageParserWorker.php
--- a/src/applications/repository/worker/commitmessageparser/PhabricatorRepositorySvnCommitMessageParserWorker.php
+++ b/src/applications/repository/worker/commitmessageparser/PhabricatorRepositorySvnCommitMessageParserWorker.php
@@ -3,14 +3,10 @@
 final class PhabricatorRepositorySvnCommitMessageParserWorker
   extends PhabricatorRepositoryCommitMessageParserWorker {
 
-  protected function parseCommit(
+  protected function parseCommitWithRef(
     PhabricatorRepository $repository,
-    PhabricatorRepositoryCommit $commit) {
-
-    $ref = id(new DiffusionLowLevelCommitQuery())
-      ->setRepository($repository)
-      ->withIdentifier($commit->getCommitIdentifier())
-      ->execute();
+    PhabricatorRepositoryCommit $commit,
+    DiffusionCommitRef $ref) {
 
     $this->updateCommitData($ref);