Leap 42: update crawler replaces SP1 packages with GA:Updates
Leap 42.1 has moved on, in some areas at least, to track packages from SLE12 SP1.
Running update-crawler currently tries to revert those packages back to the ones in SUSE:SLE-12:Update, which is not what we want.
At this moment, there are no patches published for SP1 yet.
As there are still new patches landing in GA:Update, crawler is still a worthwile addition, but it should not touch packages that are currently linked to the SP1 branch