$ git clone -n https://gitee.com/alpha-wang/systemd.git /var/lib/mock/dist-an23-build-487584-74420/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-an23-build-487584-74420/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin b53df8bcee952f7092876345ab31c20b0d4879c1:KOJI_FETCH_HEAD
From https://gitee.com/alpha-wang/systemd
 * [new ref]         b53df8bcee952f7092876345ab31c20b0d4879c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b53df8b rules: automatically modprobe sg drive