$ git clone -n https://gitee.com/src-opencloudos-rpms/openstack-trove.git /var/lib/mock/dist-oc9-epol-build-55035-14778/root/chroot_tmpdir/scmroot/openstack-trove
Cloning into '/var/lib/mock/dist-oc9-epol-build-55035-14778/root/chroot_tmpdir/scmroot/openstack-trove'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/openstack-trove
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f870f86 import openstack-trove-15.0.0-2.tl4