Update sync-to-private.yml

Author: BorisFaj

.github/workflows/sync-to-private.yml

@@ -33,4 +33,5 @@ jobs:
           cd private-repo
           git add .
           git commit -m "Sync desde repo público 🚀" || echo "Sin cambios"
-          git push origin main
+          git push origin HEAD:public-sync
+