$ git clone -n https://gitee.com/src-opencloudos-rpms/rpm-ostree.git /var/lib/mock/dist-oc9-build-121628-71712/root/chroot_tmpdir/scmroot/rpm-ostree
Cloning into '/var/lib/mock/dist-oc9-build-121628-71712/root/chroot_tmpdir/scmroot/rpm-ostree'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/rpm-ostree
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d0c2c82 import rpm-ostree-2023.2-6.tl4