$ git clone -n https://gitee.com/src-opencloudos-rpms/librepo.git /var/lib/mock/dist-oc9-build-59615-16463/root/chroot_tmpdir/scmroot/librepo
Cloning into '/var/lib/mock/dist-oc9-build-59615-16463/root/chroot_tmpdir/scmroot/librepo'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/librepo
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd8fe7d import librepo-1.15.2-4.tl4