$ git clone -n https://gitee.com/mgb01105731/xmvn.git /var/lib/mock/dist-an23-build-506739-74878/root/chroot_tmpdir/scmroot/xmvn
Cloning into '/var/lib/mock/dist-an23-build-506739-74878/root/chroot_tmpdir/scmroot/xmvn'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/xmvn
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d6b5186 update to 4.3.0