diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index a110c00..50b6938 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -41,26 +41,34 @@ jobs:
       name: ${{ steps.variables.outputs.name }}
       fingerprint: ${{ steps.variables.outputs.fingerprint }}
     steps:
+      - name: check branch condition before checkout
+        run: |
+          echo ":${{ github.ref }}:"
+
       - uses: actions/checkout@v4
         with:
           fetch-depth: 1
 
+      - name: check branch condition after checkout
+        run: |
+          echo ":${{ github.ref }}:"
+
       - name: Do wibble
         id: wibble
         run: |
           echo "IMAGE_TAG=:${IMAGE_TAG}:"
           echo "IMAGE_NAME=:${IMAGE_NAME}:"
-          exit 0
+          exit 23
 
       - name: Setup Kosli cli
-        if: ${{ github.ref }} == 'refs/heads/main' && (success() || failure())
+        if: ${{ github.ref == 'refs/heads/main' && (success() || failure()) }}
         uses: kosli-dev/setup-cli-action@v2
         with:
           version:
             ${{ env.KOSLI_CLI_VERSION }}
 
       - name: When on master, attest result to Kosli
-        if: ${{ github.ref }} == 'refs/heads/main' && (success() || failure())
+        if: ${{ github.ref == 'refs/heads/main' && (success() || failure()) }}
         run: |
           echo "KOSLI_DRY_RUN=:${KOSLI_DRY_RUN}:"
           KOSLI_COMPLIANT=$([ "${{ steps.wibble.outcome }}" == 'success' ] && echo true || echo false)