diff --git a/module_build_service/builder/CoprModuleBuilder.py b/module_build_service/builder/CoprModuleBuilder.py
index 2fdd2db7..4918a68d 100644
--- a/module_build_service/builder/CoprModuleBuilder.py
+++ b/module_build_service/builder/CoprModuleBuilder.py
@@ -28,39 +28,23 @@
 #       their tag names.
 # TODO: Ensure the RPM %dist tag is set according to the policy.
 
-import six
-from abc import ABCMeta, abstractmethod
 import logging
 import os
-
-from mock import Mock
-from kobo.shortcuts import run
 import koji
 import tempfile
-import glob
-import datetime
-import time
-import random
-import string
-import kobo.rpmlib
-import xmlrpclib
-import shutil
-import subprocess
 import threading
 
-import munch
-from OpenSSL.SSL import SysCallError
+from copr.client import CoprClient
+from copr.exceptions import CoprRequestException
 
-from module_build_service import conf, log, db
+from module_build_service import log
 from module_build_service.models import ModuleBuild
-from module_build_service import pdc
 import module_build_service.scm
 import module_build_service.utils
 import module_build_service.scheduler
 import module_build_service.scheduler.consumer
 
-from requests.exceptions import ConnectionError
-from base import GenericBuilder, _execute_cmd, build_from_scm
+from base import GenericBuilder, build_from_scm
 from KojiModuleBuilder import KojiModuleBuilder
 
 logging.basicConfig(level=logging.DEBUG)
diff --git a/module_build_service/builder/KojiModuleBuilder.py b/module_build_service/builder/KojiModuleBuilder.py
index c087e549..abd92b5f 100644
--- a/module_build_service/builder/KojiModuleBuilder.py
+++ b/module_build_service/builder/KojiModuleBuilder.py
@@ -28,12 +28,8 @@
 #       their tag names.
 # TODO: Ensure the RPM %dist tag is set according to the policy.
 
-import six
-from abc import ABCMeta, abstractmethod
 import logging
 import os
-
-from mock import Mock
 from kobo.shortcuts import run
 import koji
 import tempfile
@@ -44,22 +40,17 @@ import random
 import string
 import kobo.rpmlib
 import xmlrpclib
-import shutil
-import subprocess
 import threading
 
 import munch
 from OpenSSL.SSL import SysCallError
 
 from module_build_service import conf, log, db
-from module_build_service.models import ModuleBuild
-from module_build_service import pdc
 import module_build_service.scm
 import module_build_service.utils
 import module_build_service.scheduler
 import module_build_service.scheduler.consumer
 
-from requests.exceptions import ConnectionError
 from base import GenericBuilder
 
 logging.basicConfig(level=logging.DEBUG)
diff --git a/module_build_service/builder/MockModuleBuilder.py b/module_build_service/builder/MockModuleBuilder.py
index ff822889..a328782c 100644
--- a/module_build_service/builder/MockModuleBuilder.py
+++ b/module_build_service/builder/MockModuleBuilder.py
@@ -28,38 +28,20 @@
 #       their tag names.
 # TODO: Ensure the RPM %dist tag is set according to the policy.
 
-import six
-from abc import ABCMeta, abstractmethod
 import logging
 import os
-
-from mock import Mock
-from kobo.shortcuts import run
 import koji
-import tempfile
-import glob
-import datetime
-import time
-import random
-import string
 import kobo.rpmlib
-import xmlrpclib
 import shutil
 import subprocess
 import threading
 
-import munch
-from OpenSSL.SSL import SysCallError
-
 from module_build_service import conf, log, db
-from module_build_service.models import ModuleBuild
-from module_build_service import pdc
 import module_build_service.scm
 import module_build_service.utils
 import module_build_service.scheduler
 import module_build_service.scheduler.consumer
 
-from requests.exceptions import ConnectionError
 from base import GenericBuilder, _execute_cmd, build_from_scm
 from KojiModuleBuilder import KojiModuleBuilder
 
diff --git a/module_build_service/builder/base.py b/module_build_service/builder/base.py
index f763dfec..252212ca 100644
--- a/module_build_service/builder/base.py
+++ b/module_build_service/builder/base.py
@@ -32,27 +32,12 @@ import six
 from abc import ABCMeta, abstractmethod
 import logging
 import os
-
-from mock import Mock
-from kobo.shortcuts import run
 import koji
 import tempfile
-import glob
-import datetime
-import time
-import random
-import string
-import kobo.rpmlib
-import xmlrpclib
 import shutil
 import subprocess
-import threading
-
-import munch
-from OpenSSL.SSL import SysCallError
 
 from module_build_service import conf, log, db
-from module_build_service.models import ModuleBuild
 from module_build_service import pdc
 import module_build_service.scm
 import module_build_service.utils