diff --git a/src/applications/diffusion/management/DiffusionRepositoryBasicsManagementPanel.php b/src/applications/diffusion/management/DiffusionRepositoryBasicsManagementPanel.php
--- a/src/applications/diffusion/management/DiffusionRepositoryBasicsManagementPanel.php
+++ b/src/applications/diffusion/management/DiffusionRepositoryBasicsManagementPanel.php
@@ -597,14 +597,18 @@
     if ($message) {
       switch ($message->getStatusCode()) {
         case PhabricatorRepositoryStatusMessage::CODE_ERROR:
-          $message = $message->getParameter('message');
+          $message_body = $message->getParameter('message');
 
           $suggestion = null;
-          if (preg_match('/Permission denied \(publickey\)./', $message)) {
+          if (preg_match('/Permission denied \(publickey\)./', $message_body)) {
             $suggestion = pht(
               'Public Key Error: This error usually indicates that the '.
               'keypair you have configured does not have permission to '.
               'access the repository.');
+          } else if (preg_match(
+            '/Command failed with error #137/', $message_body)) {
+            $suggestion = pht('Fetch was killed for taking too long at %s.',
+              phabricator_datetime($message->getEpoch(), $viewer));
           }
 
           $view->addItem(