$ git clone -n https://gitee.com/opencloudos-stream/systemd.git /var/lib/mock/dist-ocs23-base-build-260052-24615/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-ocs23-base-build-260052-24615/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/opencloudos-stream/systemd
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6edf3ed Rebuilt for loongarch release