Hi Marco, currently not easy unfortunately. If you a user within the open build service (
https://build.opensuse.org) you could downalod the tarballs from
here. OBS publishes the charts as OCI images, to get other build artifacts you must be logged-in and use its own API or webUI.
On the other hand we are aware this is causing some issues here and there and we have in our roadmap improve this situation in rather short term. Note this issue we have in our TODO list
https://github.com/rancher/elemental-operator/issues/460. We are about to work on that, however note that during summer period is usually the vacational period too, hence we might slow down a little.