The AUR waterfox-classic-kpe gets an update roughly every month.
Each time during the monthly build (started from pamac) the whole source gets cloned into /var/tmp/pamac-build-user via git from github. That’s 5 GB of source being downloaded each time.
It takes time and it’s inefficient and as far as my understanding of git goes, it’s somewhat contrary to the essential feature of being able to keep local copies of a repo up to date by doing small incremental fetches from the repo.
Is there a way to make pamac reuse the local copy of the waterfox repo from the previous build and just let git update?