tack on origin

Author: Hweinstock

.github/workflows/node.js.yml

@@ -28,7 +28,7 @@ jobs:
 
         steps:
             - name: Checkout code
-              uses: actions/checkout@v1
+              uses: actions/checkout@v4
               with:
                   fetch-depth: 0
 
@@ -45,7 +45,7 @@ jobs:
               run: jscpd --config "$GITHUB_WORKSPACE/.github/workflows/jscpd.json"
 
             - name: Get the diff
-              run: git diff --name-only ${{ github.event.pull_request.base.ref }} ${{ github.head_ref }} >> diff_output.txt
+              run: git diff --name-only origin/${{ github.event.pull_request.base.ref }} ${{ github.head_ref }} >> diff_output.txt
 
             - name: Upload unfiltered jscpd report
               if: always()