[katello 3.0] Red Hat Enterprise Linux Atomic Host Trees OSTree says "Success" but has 0 branches


we have a subscription that allows to enable Red Hat Enterprise Linux
Atomic Host Trees.
I already enabled ostree support on katello with foreman-installer
–katello-enable-ostree true.

I enabled the OSTree content from "Red Hat Repositories" and a new
repository in the right product has been created.
The problem is that if I run the syncronization, everything seems to go
fine (requires some time to do checks), but no
OSTree branches are downloaded. I tried several times and no luck.

Anyone has already enabled this kind of repositories and can give me some
hints on where to look at?

These are the packages that i have:

[root@katello-server ~]# rpm -qa | grep ostree

Thank you,