The sample-images images used to rely on the @osbuild/osbuild copr repo, which is a development snapshot of osbuild. Starting today we now rely on the new @osbuild/osbuild-stable repo instead which only has the latest stable release in it. 

All users of sample-images are recommended to switch to this new copr, and all the internal references in sample-images (such as the devel image) has been changed.