Re: [PATCH] fetch-clone progress: finishing touches.

Linus Torvalds [off-list ref] writes:

ssh will only set up a pty pair if it starts an interactive shell, not if 
you use the "ssh host cmd" form.

True.  Or we _could_ use "ssh -t", but I've decided to make
progress the default.  If some script wants quiet behaviour they
can say 'pack-objects -q'.