add rev-list

Signed-off-by: kminoda <[email protected]>

.github/workflows/cpp-check.yaml

@@ -17,6 +17,7 @@ jobs:
     - name: Get changed files
       id: changed-files
       run: |
+        git rev-list --count origin/main..$(git branch --show-current)
         git fetch origin ${{ github.base_ref }} --depth=1
         git diff --name-only origin/${{ github.base_ref }} ${{ github.head_ref }} > changed_files.txt
         cat changed_files.txt