Github actions improvement test

.github/workflows/integration.yml

@@ -64,12 +64,15 @@ jobs:
 #          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
 #          restore-keys: |
 #            ${{ runner.os }}-gradle-
+      - uses: actions/checkout@develop
+        with:
+          repository: matrix-org/synapse
       - name: Start synapse server
         run: |
-          git clone -b develop https://github.com/matrix-org/synapse.git
-          source synapse/env/bin/activate
-          pip install -e synapse
-          synapse/demo/start.sh --no-rate-limit
+          cd synapse
+          source env/bin/activate
+          pip install -e .
+          demo/start.sh --no-rate-limit
 #          python3 -m venv .synapse
 #          source .synapse/bin/activate
 #          pip install synapse matrix-synapse