Ensure workflow always starts from main branch

Author: Kumari Ladli

.github/workflows/notion-sync.yml

@@ -14,9 +14,12 @@ jobs:
       pull-requests: write
 
     steps:
-      # Step 1: Checkout repo
+      # Step 1: Checkout repo from main
       - name: Checkout repository
         uses: actions/checkout@v3
+        with:
+          ref: main
+          fetch-depth: 0
 
       # Step 2: Setup Node.js
       - name: Setup Node.js