> So I could just replace packages/auctex with some other clone of > auctex.git?
Yes. >> So your first and third steps above can happen at some other time. > Alright. But I currently don't understand how "make packages/auctex" > knows which commit to check out. The first `make packages/auctex` just does git worktree add packages/auctex externals/auctex you can `git clone .../auctex.git` there instead. > And nowhere in the elpa repository do I find some statement that for > auctex the externals/auctex branch in elpa.git is to be used instead > of the main or master branch of auctex.git. It's always built from `externals/<PKG>`. The sync between those branches and an upstream (according to `:url`) is performed separately by another cron job (it could run on another machine, tho it currently doesn't). > [1] It just occurred to me that in all mails I've written about an > externals/elpa branch which is actually externals/auctex. 🙂 Stefan