$ git clone -n https://gitee.com/src-opencloudos-rpms/rust-rav1e.git /var/lib/mock/dist-oc9-epol-build-55302-14778/root/chroot_tmpdir/scmroot/rust-rav1e
Cloning into '/var/lib/mock/dist-oc9-epol-build-55302-14778/root/chroot_tmpdir/scmroot/rust-rav1e'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/rust-rav1e
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 726dc32 import rust-rav1e-0.6.4-2.tl4