Update PhytiumPi-4GB-Build.yaml

Author: chainsx

.github/workflows/PhytiumPi-4GB-Build.yaml

@@ -33,7 +33,7 @@ jobs:
       - name: Build
         shell: bash
         run: |
-          git clone https://gitee.com/openeuler/SBC-sig --depth=1
+          git clone https://gitee.com/chainsx/SBC-sig --depth=1
           cd SBC-sig/scripts/rockchip/
           sudo bash build-image-docker.sh \
                     --board phytiumpi-4gb \