Print out some more information in the action

.github/workflows/main.yml

@@ -15,17 +15,12 @@ jobs:
     - name: "Clone repository"
       uses: actions/checkout@v4
 
-    - name: "Save hashes of HEAD and HEAD~ into environment variables"
+    - name: "Print some stuff"
       shell: bash
       run: |
-        echo "head_sha=$(git log -1 --format=%h)" >> "$GITHUB_ENV"
-        echo "head_prec_sha=$(git log -3 --format=%h | tail -1)" >> "$GITHUB_ENV"
-
-    - name: "Print declared variables"
-      shell: bash
-      run: |
-        echo "head_sha = ${{ env.head_sha }}"
-        echo "head_prec_sha = ${{ env.head_prec_sha }}"
+        echo "branch = ${{ github.ref_name }}"
+        echo "head_sha = ${{ github.event.base_ref }}"
+        echo "head_prec_sha = ${{ github.event.before }}"
 
     - name: "Restore cached .agdai files"
       id: cache-agdai-restore