$ git clone -n https://gitee.com/src-opencloudos-rpms/rubygem-nokogiri.git /var/lib/mock/dist-oc9-build-62290-16463/root/chroot_tmpdir/scmroot/rubygem-nokogiri
Cloning into '/var/lib/mock/dist-oc9-build-62290-16463/root/chroot_tmpdir/scmroot/rubygem-nokogiri'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/rubygem-nokogiri
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3966993 import rubygem-nokogiri-1.15.3-2.tl4