$ git clone -n https://gitee.com/src-opencloudos-rpms/SDL2.git /var/lib/mock/dist-oc9-build-40492-14589/root/chroot_tmpdir/scmroot/SDL2
Cloning into '/var/lib/mock/dist-oc9-build-40492-14589/root/chroot_tmpdir/scmroot/SDL2'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/SDL2
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b504cec import SDL2-2.26.0-3.tl4