diff -rup atomic-reactor-71ff262252fa4d7937ccf47523f8ffdc55af6841.orig/atomic_reactor/koji_util.py atomic-reactor-71ff262252fa4d7937ccf47523f8ffdc55af6841/atomic_reactor/koji_util.py
--- atomic-reactor-71ff262252fa4d7937ccf47523f8ffdc55af6841.orig/atomic_reactor/koji_util.py	2017-10-07 00:29:43.426475060 +0200
+++ atomic-reactor-71ff262252fa4d7937ccf47523f8ffdc55af6841/atomic_reactor/koji_util.py	2017-10-07 00:30:52.514536444 +0200
@@ -72,7 +72,7 @@ def create_koji_session(hub_url, auth_in
     :param auth_info: dict, authentication parameters used for koji_login
     :return: koji.ClientSession instance
     """
-    session = koji.ClientSession(hub_url, opts={'krb_rdns': False})
+    session = koji.ClientSession(str(hub_url), opts={'krb_rdns': False})
 
     if auth_info is not None:
         koji_login(session, **auth_info)