$ git clone -n https://gitee.com/src-opencloudos-rpms/seabios.git /var/lib/mock/dist-oc9-build-45021-14591/root/chroot_tmpdir/scmroot/seabios
Cloning into '/var/lib/mock/dist-oc9-build-45021-14591/root/chroot_tmpdir/scmroot/seabios'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/seabios
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e386ca7 import seabios-1.16.0-3.tl4