Added checkout before copy

.github/workflows/merge-json.yml

@@ -38,21 +38,22 @@ jobs:
           commit_message: 'Update samples.json'
           file_pattern: samples.json
           push_options: '--force'
-
-      - name: Checkout gh-pages branch
-        run: |
-            git fetch
-            git checkout gh-pages
-      - name: Copy samples.json to gh-pages branch
-        run: cp samples.json ./samples.json
+          
+      - name: Checkout main branch
+        uses: actions/checkout@v2
+        with:
+            ref: 'main'
+            path: 'main'
+  
+      - name: Checkout gh-pages branch
+        uses: actions/checkout@v2
+        with:
+            ref: 'gh-pages'
+            path: 'gh-pages'
+  
+      - name: Copy samples.json to gh-pages branch
+        run: cp main/samples.json gh-pages/samples.json
   
-        # - name: Commit samples.json to gh-pages branch
-        #   run: |
-        #     git config --local user.email "${{ secrets.USER_EMAIL }}"
-        #     git config --local user.name "${{ secrets.USER_NAME }}"
-        #     git add ./samples.json
-        #     git commit -m "Update samples.json in gh-pages branch"
-        #     git push origin gh-pages
 
       - name: Commit to gh-pages branch
         uses: stefanzweifel/git-auto-commit-action@v4