ci: fix divergent branches (reset --hard)

.gitea/workflows/build.yml

@@ -20,8 +20,12 @@ jobs:
           WORK=/root/.cache/demo-frontend
           mkdir -p $WORK
           cd $WORK
-          [ -d .git ] || git clone http://joe:${GITEA_TOKEN}@192.168.1.212:3000/joe/demo-frontend.git .
-          git pull
+          if [ -d .git ]; then
+            git reset --hard origin/main
+            git clean -fd
+          else
+            git clone http://joe:${GITEA_TOKEN}@192.168.1.212:3000/joe/demo-frontend.git .
+          fi
 
           SHORT_SHA=${GITHUB_SHA::8}
           cat > package.json <<EOF