diff --git a/.gitea/workflows/build.yml b/.gitea/workflows/build.yml
index a1bef0e..bda896f 100644
--- a/.gitea/workflows/build.yml
+++ b/.gitea/workflows/build.yml
@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: test
-        run: head -c20 ${{ secrets.RUNNER_SSH_PRIVATE_KEY }}
+        run: echo ${{ secrets.RUNNER_SSH_PRIVATE_KEY }} | awk '{print substr($0,1,30)}'
 
       - name: Checkout
         uses: actions/checkout@v4