diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 8c71863..e976fed 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,12 +11,17 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
         with:
-          ref: ${{ github.ref }}
+          ref: ${{ github.base_ref }}
+
+      - name: Verify Git Ref
+        run: |
+          git rev-parse HEAD
+          git log --oneline
 
       - name: Set up Swift
         uses: fwal/setup-swift@v1
         with:
-          swift-version: '6.0'  # Specify the Swift version you need
+          swift-version: '5.9'  # Specify the Swift version you need
 
       - name: Build Swift Package
         run: swift build