$ git clone -n https://gitee.com/mgb01105731/libisofs_2.git /var/lib/mock/dist-an23.2-build-419185-72881/root/chroot_tmpdir/scmroot/libisofs_2
Cloning into '/var/lib/mock/dist-an23.2-build-419185-72881/root/chroot_tmpdir/scmroot/libisofs_2'...
$ git fetch origin a23:KOJI_FETCH_HEAD
From https://gitee.com/mgb01105731/libisofs_2
 * [new branch]      a23        -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ac8a742 Update to 1.5.6 from 1.5.4