Fix repo update

.github/workflows/arch.yml

@@ -79,8 +79,8 @@ jobs:
     steps:
     - name: Install dependencies
       run: |
-        apt-get update
-        apt-get install -y git
+        sudo apt-get update
+        sudo apt-get install -y git
 
     - name: Download artifacts
       uses: actions/download-artifact@v1