diff --git a/src/applications/diffusion/conduit/DiffusionQueryCommitsConduitAPIMethod.php b/src/applications/diffusion/conduit/DiffusionQueryCommitsConduitAPIMethod.php
--- a/src/applications/diffusion/conduit/DiffusionQueryCommitsConduitAPIMethod.php
+++ b/src/applications/diffusion/conduit/DiffusionQueryCommitsConduitAPIMethod.php
@@ -35,11 +35,8 @@
     $bypass_cache = $request->getValue('bypassCache');
 
     $query = id(new DiffusionCommitQuery())
-      ->setViewer($request->getUser());
-
-    if ($need_messages) {
-      $query->needCommitData(true);
-    }
+      ->setViewer($request->getUser())
+      ->needCommitData(true);
 
     $repository_phid = $request->getValue('repositoryPHID');
     if ($repository_phid) {
@@ -75,6 +72,8 @@
 
     $data = array();
     foreach ($commits as $commit) {
+      $commit_data = $commit->getCommitData();
+
       $callsign = $commit->getRepository()->getCallsign();
       $identifier = $commit->getCommitIdentifier();
       $uri = '/r'.$callsign.$identifier;
@@ -89,10 +88,14 @@
         'uri' => $uri,
         'isImporting' => !$commit->isImported(),
         'summary' => $commit->getSummary(),
-        'authorName' => '',
-        'authorEmail' => '',
-        'committerName' => '',
-        'committerEmail' => '',
+        'authorPHID' => $commit->getAuthorPHID(),
+        'committerPHID' => $commit_data->getCommitDetail('committerPHID'),
+        'author' => $commit_data->getAuthorName(),
+        'authorName' => $commit_data->getCommitDetail('authorName'),
+        'authorEmail' => $commit_data->getCommitDetail('authorEmail'),
+        'committer' => $commit_data->getCommitDetail('committer'),
+        'committerName' => $commit_data->getCommitDetail('committerName'),
+        'committerEmail' => $commit_data->getCommitDetail('committerEmail'),
         'hashes' => array(),
       );
 
@@ -102,8 +105,10 @@
           ->withIdentifier($commit->getCommitIdentifier())
           ->execute();
 
+        $dict['author'] = $lowlevel_commitref->getAuthor();
         $dict['authorName'] = $lowlevel_commitref->getAuthorName();
         $dict['authorEmail'] = $lowlevel_commitref->getAuthorEmail();
+        $dict['committer'] = $lowlevel_commitref->getCommitter();
         $dict['committerName'] = $lowlevel_commitref->getCommitterName();
         $dict['committerEmail'] = $lowlevel_commitref->getCommitterEmail();
 
@@ -118,13 +123,8 @@
         }
       }
 
-      if ($need_messages) {
-        $commit_data = $commit->getCommitData();
-        if ($commit_data) {
-          $dict['message'] = $commit_data->getCommitMessage();
-        } else {
-          $dict['message'] = null;
-        }
+      if ($need_messages && !$bypass_cache) {
+        $dict['message'] = $commit_data->getCommitMessage();
       }
 
       $data[$commit->getPHID()] = $dict;
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
@@ -18,6 +18,10 @@
     }
     $data->setCommitID($commit->getID());
     $data->setAuthorName((string)$author);
+
+    $data->setCommitDetail('authorName', $ref->getAuthorName());
+    $data->setCommitDetail('authorEmail', $ref->getAuthorEmail());
+
     $data->setCommitDetail(
       'authorPHID',
       $this->resolveUserPHID($commit, $author));
@@ -26,6 +30,10 @@
 
     if (strlen($committer)) {
       $data->setCommitDetail('committer', $committer);
+
+      $data->setCommitDetail('committerName', $ref->getCommitterName());
+      $data->setCommitDetail('committerEmail', $ref->getCommitterEmail());
+
       $data->setCommitDetail(
         'committerPHID',
         $this->resolveUserPHID($commit, $committer));