I've gone through your problem myself countless times, and concluded that hitting ctrl+c to interrupt the status line every time it tries to render the current repository state is not very productive.

My git status line uses timelimit (https://devel.ringlet.net/sysutils/timelimit/) to automatically stop if any of the git status parts (dirty/staged/new files) take > 0.1 seconds to finish:

https://github.com/justuswilhelm/pufferfish/blob/master/fish...