$ git clone -n https://gitee.com/mgb01105731/lftp.git /var/lib/mock/dist-an23-build-451103-73471/root/chroot_tmpdir/scmroot/lftp
Cloning into '/var/lib/mock/dist-an23-build-451103-73471/root/chroot_tmpdir/scmroot/lftp'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/lftp
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 331efb2 Init upstream from 4.9.2