$ git clone -n https://gitee.com/src-opencloudos-rpms/mpdecimal.git /var/lib/mock/dist-oc9-build-70837-47477/root/chroot_tmpdir/scmroot/mpdecimal
Cloning into '/var/lib/mock/dist-oc9-build-70837-47477/root/chroot_tmpdir/scmroot/mpdecimal'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/mpdecimal
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f7f0df import mpdecimal-2.5.1-4.tl4