diff --git a/roles/copr/backend/files/provision/files/mock/site-defaults.cfg b/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
index a7ec2de8fa..ccf1e73c6e 100644
--- a/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
+++ b/roles/copr/backend/files/provision/files/mock/site-defaults.cfg
@@ -41,3 +41,8 @@ config_opts['package_manager_attempt_delay'] = 10
 
 # https://pagure.io/copr/copr/issue/1211
 config_opts['nspawn_args'] += ['--rlimit=RLIMIT_NOFILE=10240']
+
+# don't hang on broken patches, and don't put color shell sequences into
+# build-live.log file
+# https://github.com/rpm-software-management/mock/issues/432
+config_opts['nspawn_args'] += ['--pipe']