$ git clone -n https://gitee.com/src-opencloudos-rpms/rubygem-rspec-core.git /var/lib/mock/dist-oc9-build-51555-14595/root/chroot_tmpdir/scmroot/rubygem-rspec-core
Cloning into '/var/lib/mock/dist-oc9-build-51555-14595/root/chroot_tmpdir/scmroot/rubygem-rspec-core'...
$ git fetch origin oc9:KOJI_FETCH_HEAD
From https://gitee.com/src-opencloudos-rpms/rubygem-rspec-core
 * [new branch]      oc9        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75771f8 import rubygem-rspec-core-3.12.1-4.tl4