Presentation shows that if you decide to fix a python-version in a .python-version file, rye sync will not work and complain, and you will have to fetch it manually with `rye fetch <version>`.

I am wondering why the developers chose not to propose to fetch the missing version when doing `rye sync`. I would expect anyone preparing the video tutorial to think "wait, this is stupid, let's fix this asap" instead of showing off potential users how unfriendly the ux is.