diff --git a/.github/workflows/scripts/aot-demo.sh b/.github/workflows/scripts/aot-demo.sh
index d7efd3569ee08..a591eb81b3f86 100755
--- a/.github/workflows/scripts/aot-demo.sh
+++ b/.github/workflows/scripts/aot-demo.sh
@@ -43,7 +43,7 @@ function prepare-unity-build-env {
     cd taichi
 
     # Dependencies
-    git clone --reference-if-able /var/lib/git-cache -b upgrade-modules2 https://github.com/taichi-dev/Taichi-UnityExample
+    git clone --reference-if-able /var/lib/git-cache https://github.com/taichi-dev/Taichi-UnityExample
 
     python misc/generate_unity_language_binding.py
     cp c_api/unity/*.cs Taichi-UnityExample/Assets/Taichi/Generated