Reported-by: NAdam D. Barratt <adsb@debian.org>

This should avoid errors on the second try when InRelease was already
removed.

Makes it easier to comment-out already done stuff...

This should make it a bit easier to comment out the part that already
run in case the script abort during the point release.

It looks up the archive from the ${suite} and that doesn't like the
codename.

Every second counts!