diff --git a/.github/workflows/cleanup-after-pr.yml b/.github/workflows/cleanup-after-pr.yml
index c61d509b1..b63dd4a30 100644
--- a/.github/workflows/cleanup-after-pr.yml
+++ b/.github/workflows/cleanup-after-pr.yml
@@ -10,9 +10,6 @@ jobs:
     name: Remove branch-specific Docker images
     runs-on: ubuntu-22.04
     steps:
-      - name: Check out repo
-        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
-
       ########## ACR ##########
       - name: Log in to Azure - QA Subscription
         uses: Azure/login@92a5484dfaf04ca78a94597f4f19fea633851fa2 # v1.4.7
@@ -33,6 +30,7 @@ jobs:
       ########## Remove Docker images ##########
       - name: Remove the Docker image from ACR
         env:
+          REF: ${{ github.event.pull_request.head.ref }}
           REGISTRIES: |
             registries:
               - bitwardenprod
@@ -59,7 +57,7 @@ jobs:
             for REGISTRY in $( echo "${{ env.REGISTRIES }}" | yq e ".registries[]" - )
             do
               SERVICE_NAME=$(echo $SERVICE | awk '{print tolower($0)}')
-              IMAGE_TAG=$(echo "${GITHUB_REF:11}" | sed "s#/#-#g")  # slash safe branch name
+              IMAGE_TAG=$(echo "${REF}" | sed "s#/#-#g")  # slash safe branch name
 
               echo "[*] Checking if remote exists: $REGISTRY.azurecr.io/$SERVICE_NAME:$IMAGE_TAG"
               TAG_EXISTS=$(