Older servers do not accept the incl_blocked option:
incl_blocked
koji.ParameterError: readTagGroups() got an unexpected keyword argument 'incl_blocked'
easy fix forthcoming
Metadata Update from @mikem: - Issue tagged with: bug, easyfix
Given that newer client/older server is a fairly common scenario, I think it's worth targeting 1.17 for this.
Metadata Update from @mikem: - Issue set to the milestone: 1.17
Commit 90a942f4 fixes this issue
Commit 7e02cdb4 fixes this issue
This issue has been migrated to Fedora Forge: https://forge.fedoraproject.org/koji/koji/issues/1126
Please continue any further discussion there.