Re: [PATCH v5 3/4] remote: add "git remote add --limited-fetch"

> From: Harald Nordgren <haraldnordgren@gmail.com>
>
> A remote added the ordinary way tracks every branch it has, via a
> wildcard remote.<name>.fetch refspec. That is wasteful for a remote
> whose history is only worth following for the branches actually in
> use locally, and it can make "git fetch" negotiate history for
> branches nobody asked for.
>
> Give "git remote add" a --limited-fetch option that sets up
> remote.<name>.refmap instead of remote.<name>.fetch, so that
> "git fetch <name>" only fetches the branches already tracked, plus
> the remote's default branch, as described in the previous commit.
> It is rejected together with -t/--track or --mirror, since those
> already say explicitly what to fetch.