$ git clone -n https://gitee.com/src-opencloudos-rpms/libdnf.git /var/lib/mock/dist-oc9-build-70297-47415/root/chroot_tmpdir/scmroot/libdnf
Cloning into '/var/lib/mock/dist-oc9-build-70297-47415/root/chroot_tmpdir/scmroot/libdnf'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/libdnf
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f828ac3 import libdnf-0.70.2-3.tl4