Since python-s3transfer was orphaned, boto3 can no longer be installed: https://src.fedoraproject.org/rpms/python-s3transfer/commits/master
See also: https://bugzilla.redhat.com/show_bug.cgi?id=1646424 https://bugzilla.redhat.com/show_bug.cgi?id=1655730
Should be working now.