You can add my repo as a remote, check out my branch directly, and then compile it. But yes, you’ll need to add my code in order to test my code.
I’m a git command line guy, so I would do this:
git remote add mlangsdorf https://github.com:mlangsdorf/Cataclysm-DDA.git
git fetch mlangsdorf
git checkout -b fc_refactor_3 mlangsdorf/fc_refactor_3
adjust as need for your prefered git client. I don’t use github so don’t ask me. then you would need to compile, which again, I only know Linux and can’t help at all with MSVC.