Merge pull request #392 from yorunning/main

ci(sync): skip main repo execution

.github/workflows/sync.yml

@@ -2,13 +2,14 @@ name: Upstream Sync
 
 on:
   schedule:
-    - cron: '0 */12 * * *' # every 12 hours
-  workflow_dispatch: # on button click
+    - cron: "0 */6 * * *" # every 6 hours
+  workflow_dispatch:
 
 jobs:
   sync_latest_from_upstream:
     name: Sync latest commits from upstream repo
     runs-on: ubuntu-latest
+    if: ${{ github.event.repository.fork }}
 
     steps:
       # Step 1: run a standard checkout action, provided by github