diff --git a/.github/workflows/comparison-results.yml b/.github/workflows/comparison-results.yml
index 20e722e78..b8a66c357 100644
--- a/.github/workflows/comparison-results.yml
+++ b/.github/workflows/comparison-results.yml
@@ -58,7 +58,9 @@ jobs:
 
       # langauge specific repository file
       - name: Run the script for ${{github.head_ref}} and ${{github.base_ref}}
-        run: export GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }} && cd ./temp/standalone-monitoring-stability && pip install -r requirements.txt && python3 ./run.py -r ./repos/${{matrix.language}}.txt -b ${{github.base_ref}} -h ${{github.head_ref}} -bcr ${{ github.event.pull_request.base.repo.html_url }} -hcr ${{ github.event.pull_request.head.repo.html_url }} -guf
+        env:
+          HEAD_REF: ${{ github.head_ref }}
+        run: export GITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }} && cd ./temp/standalone-monitoring-stability && pip install -r requirements.txt && python3 ./run.py -r ./repos/${{matrix.language}}.txt -b ${{github.base_ref}} -h $HEAD_REF -bcr ${{ github.event.pull_request.base.repo.html_url }} -hcr ${{ github.event.pull_request.head.repo.html_url }} -guf
 
       - name: Run aws-export
         run: cd ./temp/standalone-monitoring-stability/ && python3 aws-export.py ${{matrix.language}}-${{github.event.number}}