$ git clone -n https://gitee.com/mgb01105731/rabbitmq-server.git /var/lib/mock/dist-an23-build-278027-64428/root/chroot_tmpdir/scmroot/rabbitmq-server
Cloning into '/var/lib/mock/dist-an23-build-278027-64428/root/chroot_tmpdir/scmroot/rabbitmq-server'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/rabbitmq-server
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 46173ee init upstream from version 3.10.19