$ git clone -n https://gitee.com/src-opencloudos-rpms/irssi.git /var/lib/mock/dist-oc9-build-41724-14591/root/chroot_tmpdir/scmroot/irssi
Cloning into '/var/lib/mock/dist-oc9-build-41724-14591/root/chroot_tmpdir/scmroot/irssi'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/irssi
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2d00610 import irssi-1.4.3-3.tl4