Rebuild all the packages - part 2

[sorenisanerd]

Identify the upstream repos and exact revisions corresponding to the source packages. Build them from there, taking the tarballs out of the equation.

[sorenisanerd]

This will likely be helpful: https://github.com/systemd/mkosi/blob/5598b7f5793b6f63db5afaa39504a763fbaeb5cb/docs/building-rpms-from-source.md