diff --git a/java/com/google/gerrit/git/RefUpdateUtil.java b/java/com/google/gerrit/git/RefUpdateUtil.java
index ee74f2b..520d0f2 100644
--- a/java/com/google/gerrit/git/RefUpdateUtil.java
+++ b/java/com/google/gerrit/git/RefUpdateUtil.java
@@ -125,6 +125,11 @@
       case LOCK_FAILURE:
         throw new LockFailureException("Failed to update " + ru.getName() + ": " + result, ru);
       default:
+      case IO_FAILURE:
+      case REJECTED:
+      case REJECTED_CURRENT_BRANCH:
+      case REJECTED_MISSING_OBJECT:
+      case REJECTED_OTHER_REASON:
         throw new IOException("Failed to update " + ru.getName() + ": " + ru.getResult());
     }
   }