$ git clone -n https://gitee.com/src-opencloudos-rpms/sip6.git /var/lib/mock/dist-oc9-build-121678-71730/root/chroot_tmpdir/scmroot/sip6
Cloning into '/var/lib/mock/dist-oc9-build-121678-71730/root/chroot_tmpdir/scmroot/sip6'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/sip6
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 922a566 import sip6-6.7.9-5.tl4