$ git clone -n https://gitee.com/src-opencloudos-rpms/systemd /var/lib/mock/dist-oc8-build-67448-41420/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-oc8-build-67448-41420/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin oc8:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/systemd
 * [new branch]      oc8        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b8a1337 import systemd-239-78.tl3.1