$ git clone -n https://gitee.com/mgb01105731/bcel.git /var/lib/mock/dist-an23-build-288308-64871/root/chroot_tmpdir/scmroot/bcel
Cloning into '/var/lib/mock/dist-an23-build-288308-64871/root/chroot_tmpdir/scmroot/bcel'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/bcel
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90e8f53 init upstream from version 6.5.0