Like Arch, Artix has its own set of official repositories. Packages in Artix's repos are always preferred and should be selected over any equivalents in Arch. Ensure that Artix repos are always above Arch's repos in your
pacman.conf. Artix repos are the same as Arch's repos in structure. The names just have to be slightly different.
Note that Arch's core repo should never be used on an Artix system. It contains many, fundamental packages that are incompatible with Artix's sets of core packages. On the other hand, extra, community, and multilib (if you use 32-bit packages), should be enabled (extra and community are on by default) in your
pacman.conf. The reason is simply because the Artix team is quite small and duplicating all of Arch's work is impossible. There are plenty of packages pulled from Arch's extra and community repos.
Warning: You may experience some breakage if you use the gremlins repos. Only enable these if you are an experienced user and know how to deal with system breakage.
Warning: Never use these repos for any reason. These are for backend developer use only. Your system will break if you pull packages from here.