model: log exception if multiple repos rather than hard error

rhodecode/model/db.py

@@ -1379,9 +1379,10 b' class Repository(Base, BaseModel):'
             if cls == item_cls and instance.repo_name == repo_name:
                 exist_in_session.append(instance)
         if exist_in_session:
-            if len(exist_in_session) > 1:
-                raise Exception('2 same name repos in session')
+            if len(exist_in_session) == 1:
             return exist_in_session[0]
+            log.exception(
+                'multiple repos with same name: %r' % exist_in_session)
             
         q = session.query(cls).filter(cls.repo_name == repo_name)
         return q.scalar()