@hailey basically yes; this is intended for a git-less workflows where you're using PUT and PATCH to push SSG output for e.g. your main branch and feature/PR branches directly to the site, therefore conserving a lot of git traffic (and headache)
this does create a situation where there is no single source of truth for the website (but we're _avoiding_ a repo with 500 pr/N subfolders, right?). so you might want to back it up... `curl .../git-pages/archive.tar` has got you covered :3