$ git clone -n https://gitee.com/src-opencloudos-rpms/guestfs-tools.git /var/lib/mock/dist-oc9-build-70029-47378/root/chroot_tmpdir/scmroot/guestfs-tools
Cloning into '/var/lib/mock/dist-oc9-build-70029-47378/root/chroot_tmpdir/scmroot/guestfs-tools'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/guestfs-tools
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7de0b50 import guestfs-tools-1.51.4-2.tl4