diff --git a/app/Models/Application.php b/app/Models/Application.php
index b4272b3c7..a4f51780e 100644
--- a/app/Models/Application.php
+++ b/app/Models/Application.php
@@ -1093,6 +1093,8 @@ public function setGitImportSettings(string $deployment_uuid, string $git_clone_
         $escapedBaseDir = escapeshellarg($baseDir);
         $isShallowCloneEnabled = $this->settings?->is_git_shallow_clone_enabled ?? false;
 
+        // Use the explicitly passed commit (e.g. from rollback), falling back to the application's git_commit_sha.
+        // Invalid refs will cause the git checkout/fetch command to fail on the remote server.
         $commitToUse = $commit ?? $this->git_commit_sha;
 
         if ($commitToUse !== 'HEAD') {
@@ -1964,7 +1966,6 @@ public function parseHealthcheckFromDockerfile($dockerfile, bool $isInit = false
         }
     }
 
-
     public function getLimits(): array
     {
         return [