We have a web page showing hosts in given channel, but there is no easy way to get listing of all channels. From such page there could be links here (channelinfo). Also CLI command (list-channels) could find some use.
PR #442
Commit 2c4f09d8 fixes this issue
Commit c5f910ff relates to this ticket
Metadata Update from @tkopecek: - Issue set to the milestone: 1.13
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/437
Please continue any further discussion there.