$ git clone -n https://src.fedoraproject.org/rpms/kf5-kio.git /var/lib/mock/f40-build-743618-111339/root/chroot_tmpdir/scmroot/kf5-kio
Cloning into '/var/lib/mock/f40-build-743618-111339/root/chroot_tmpdir/scmroot/kf5-kio'...
$ git fetch origin 26d33947380eef371e0372f294dc5de95f2bc3df:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kio
 * [new ref]         26d33947380eef371e0372f294dc5de95f2bc3df -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 26d3394 kf6 compatibility support