diff --git i/marge/batch_job.py w/marge/batch_job.py
index b6423d8..3db302f 100644
--- i/marge/batch_job.py
+++ w/marge/batch_job.py
@@ -205,6 +205,8 @@ class BatchMergeJob(job.MergeJob):
         # Rebase and apply the trailers
         self.update_merge_request(merge_request, source_repo_url=source_repo_url)
 
+        time.sleep(10)
+
         # This switches git to <target_branch>
         final_sha = self.merge_batch(
             merge_request.target_branch,