Ah, I tried the gitlab and the tarballs 404 for me there, sorry I should have been more specific in the original post!

fwiw this does look interesting.

Got around to sorting the 404. Releases now work.

https://gitlab.com/rhobimd-oss/shebe/-/releases/v0.5.6-rc2

I see what's happening. I never validated those build artifacts... Thanks for the catch. Will rebuild notify you here.