diff --git a/server/tm/git_tm/git_task_manager.go b/server/tm/git_tm/git_task_manager.go
index f7d7a07..9806a07 100644
--- a/server/tm/git_tm/git_task_manager.go
+++ b/server/tm/git_tm/git_task_manager.go
@@ -1103,7 +1103,8 @@
 		cleanTitle = cleanTitle[:40]
 	}
 
-	return fmt.Sprintf("%s/[%s]-%s", prefix, task.ID, cleanTitle)
+	// Use parentheses instead of square brackets for task ID to avoid Git branch name restrictions
+	return fmt.Sprintf("%s/(%s)-%s", prefix, task.ID, cleanTitle)
 }
 
 // buildSolutionPRDescription creates PR description from template