$ git clone -n https://gitee.com/src-anolis-os/systemd.git /var/lib/mock/dist-an8.7-build-277572-64361/root/chroot_tmpdir/scmroot/systemd
Cloning into '/var/lib/mock/dist-an8.7-build-277572-64361/root/chroot_tmpdir/scmroot/systemd'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/src-anolis-os/systemd
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 909ffb7 optimise spec file