What is this?

A simple RPM package for MultiMC that contains a script that downloads and installs real MultiMC on Red Hat based systems.

It contains a .desktop file, a .metainfo.xml file, an icon, and a simple script that does the heavy lifting.

How to build this?

You need the rpm-build package. Switch into this directory, then run:

rpmbuild --build-in-place -bb MultiMC5.spec

Replace the version with whatever is appropriate.