testing new db approach on CI

.github/workflows/rust.yml

@@ -27,7 +27,7 @@ jobs:
         uses: arduino/setup-protoc@v3
       - uses: actions/checkout@v4
         with:
-          ref: ${github.ref_name}
+          ref: ${{ github.event.pull_request.head.ref }}
 
       - name: Install sqlx
         run: cargo install sqlx-cli --version 0.6.2