Hello @bgcarlisle ,
I had never heard of Codeberg before, so I googled for it and one of the entries was https://codeberg.org/mehrad/mehrad_R_package. They
proposes to install their package with
if (!require("devtools")) install.packages("devtools")
devtools::install_git(url = "https://codeberg.org/mehrad/mehrad_R_package/")
Why would this code (with change of package name of course) not work for you? Did you try it?