$ git clone -n https://gitee.com/pkm031/systemd.git /var/lib/mock/dist-an23-build-474228-74190/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-an23-build-474228-74190/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin 00c14f38fcd2ebec705dfd9ed4748c0d617d607b:KOJI_FETCH_HEAD
From https://gitee.com/pkm031/systemd
 * [new ref]         00c14f38fcd2ebec705dfd9ed4748c0d617d607b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00c14f3 print-backtrack-log-to-var-log-messages