$ git clone -n https://gitee.com/pkm031/systemd.git /var/lib/mock/dist-an23-build-474234-74190/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-an23-build-474234-74190/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin 320fe9897d158585700a852ce759c8c27dc7fa1f:KOJI_FETCH_HEAD
From https://gitee.com/pkm031/systemd
 * [new ref]         320fe9897d158585700a852ce759c8c27dc7fa1f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 320fe98 print-backtrack-log-to-var-log-messages