Most of the *fetches (and clones by other names) have an option for showing a different distro’s logo without having to go through any major changes. neofetch, moribund though it is, has --ascii_distro for that purpose (Weird choice of an underscore in an option. Most programs use more hyphens to separate words in long options).

This did get me to install screenfetch (superseded by plain old fetch but realised that too late for this comment), cpufetch (a year old, still in active development) and archey4 (likewise) after I did a bit of research on similar programs though, so maybe the sirens got me one way or the other.