$ git clone -n https://gitee.com/src-opencloudos-rpms/jctools.git /var/lib/mock/dist-oc9-build-50273-14595/root/chroot_tmpdir/scmroot/jctools
Cloning into '/var/lib/mock/dist-oc9-build-50273-14595/root/chroot_tmpdir/scmroot/jctools'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/jctools
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f265b62 import jctools-3.3.0-2.tl4