again... fixing deployment actions

.gitea/workflows/ci.yml

@@ -1,6 +1,6 @@
 # .gitea/workflows/ci.yml
 # Runs on every push and pull request (except main, which uses deploy.yml).
-# Designed for a host-mode act_runner on Ubuntu with Node 20 already installed.
+# Uses no external actions — all steps are plain shell commands.
 
 name: CI
 
@@ -17,7 +17,9 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        run: |
+          git clone ${{ gitea.server_url }}/${{ gitea.repository }}.git .
+          git checkout ${{ gitea.sha }}
 
       - name: Verify Node.js
         run: node --version && npm --version