diff --git a/.github/workflows/sg2000-special.yml b/.github/workflows/sg2000-special.yml
index 548384d..bcedc37 100644
--- a/.github/workflows/sg2000-special.yml
+++ b/.github/workflows/sg2000-special.yml
@@ -26,7 +26,7 @@ jobs:
     - name: Checkout Source Files
       run:  |
         ## TODO: Paste the GitHub Repo and Branch
-        source=https://github.com/apache/nuttx/tree/main
+        source=https://github.com/apache/nuttx/tree/master
 
         ## Match `https://github.com/user/repo/tree/branch`
         pattern='\(.*\)\/tree\/\(.*\)'