I did so on https://source.puri.sm/ to get a better overview of what happens.
I’m not sure I found what I’ve been looking for. The closest thing I came across is this repo: liberty / host / Smilodon · GitLab, but it seems to be based on mastodon 3.1.2 whereas I’m seeing 3.1.1 on social.librem.one .
There’s also a mastodon repo Eugen Rochko / mastodon · GitLab, but it seems like a version 2.6.2 mastodon copy.
Any suggestions?