$ git clone -n https://gitee.com/mgb01105731/gom.git /var/lib/mock/dist-an23-build-285625-64769/root/chroot_tmpdir/scmroot/gom
Cloning into '/var/lib/mock/dist-an23-build-285625-64769/root/chroot_tmpdir/scmroot/gom'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/gom
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1a6942e init upstream from version 0.4