Unable to mirror SLES 15 SP1 repo on SMT

I was trying to add the 15SP1 Pool and Updates repositories to my SMT server installation (on a sles12 sp2), all seems ok but at the end it only mirrors 2 packages:
-rw-r–r-- 1 smt www 16780 May 5 2019 skelcd-control-SLES-15.1.1-1.20.x86_64.rpm
-rw-r–r-- 1 smt www 429336 May 23 2019 sles-release-15.1-66.1.x86_64.rpm
what am I missing?
thanks all