diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 222a77c..e42cc29 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -18,11 +18,12 @@ jobs:
     - uses: actions/checkout@v4
       with:
         filter: blob:none
-    - name: checkout submodule ref
-      run: git submodule update --init --filter blob:none agnos-kernel-sdm845
 
-    - id: kernel-submodule
-      run: echo "ref=$(git ls-tree HEAD | awk '$4 == "agnos-kernel-sdm845"' | awk '{print $3}')" >> "$GITHUB_OUTPUT"
+    - name: checkout kernel submodule
+      id: kernel-submodule
+      run: |
+        git submodule update --init --filter blob:none agnos-kernel-sdm845
+        echo "ref=$(git ls-tree HEAD | awk '$4 == "agnos-kernel-sdm845"' | awk '{print $3}')" >> "$GITHUB_OUTPUT"
 
     - uses: actions/cache/restore@v4
       id: restore-cache