Usability issue: "Your branch is up to date"

Hi, I've been teaching Git to a group of young learners lately. They find it odd that commands like `git status` or `git switch main` say "Your branch is up to date with 'origin/main'" even when there are changes that can be fetched from the remote. My proposal: Add the timestamp of the last fetch to the message. For example:

``` $ git switch main Switched to branch 'main' Your branch is up to date with 'origin/main'. Last check was 2 hours ago. ```

It looks like the timestamp of file `.git/FETCH_HEAD` would be enough to implement it.