$ git clone -n https://gitee.com/src-opencloudos-rpms/system-logos.git /var/lib/mock/dist-oc9-build-72106-47641/root/chroot_tmpdir/scmroot/system-logos
Cloning into '/var/lib/mock/dist-oc9-build-72106-47641/root/chroot_tmpdir/scmroot/system-logos'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/system-logos
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 04c87cb !1 Add syslinux-splash.png Merge pull request !1 from Fanjun Kong/oc9