$ git clone -n https://gitee.com/opencloudos-stream/bc.git /home/lib/mock/dist-ocs23-loongarch64-build-219773-16804/root/chroot_tmpdir/scmroot/bc
Cloning into '/home/lib/mock/dist-ocs23-loongarch64-build-219773-16804/root/chroot_tmpdir/scmroot/bc'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/bc
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56d7c28 Rebuilt for OpenCloudOS Stream 23.09