git remote set-head automatically

Context: recently I've been trying to develop a feature for my Gradle
plugin that derives a semantic version from git describe.  In order to
achieve my next level of feature I need the HEAD Branch. Now, I can
get this branch using git remote show <remote> and parsing the output.
I'm a firm believer that it should be possible for me to write code,
long term even, without the internet; I did this once with my job when
I needed to go home to my parents who were very rural and didn't have
internet; I was able to keep working without access. I want that for
anyone that uses this tool.

Problem: I don't want to have to do a network request every time I do
a build, in fact I'd rather almost never have to do a network request.
Gradle makes reducing the network request to less than once per build
something ... unsupported. jgit doesn't expose support for fetching
this information. Then I found out that you could do `git remote
set-head <remote> <branch>` which appears to behave exactly how I'd
want and expect. It doesn't easily solve my problem though because I
want my solution to be generally applicable.

Ideal Long-Term Solution: git remote set-head happens automatically on lone, and even fetch if it's not set. Explicit setting would override any automatic setting; and it might be a good idea to automatically unset if the HEAD branch disappears from the remote.

Could this change be made? is there a reason not to?

Please cc, I'm not on the list.