add patch that fix building CL OS iso

fix_for_build_cl_iso.patch

@@ -0,0 +1,12 @@
+diff -uprN a/pungi/phases/gather/sources/source_module.py b/pungi/phases/gather/sources/source_module.py
+--- a/pungi/phases/gather/sources/source_module.py	2019-07-02 13:27:36.000000000 +0300
++++ b/pungi/phases/gather/sources/source_module.py	2020-12-03 10:30:25.037856509 +0300
+@@ -38,7 +38,7 @@ class GatherSourceModule(pungi.phases.ga
+ 
+         compatible_arches = pungi.arch.get_compatible_arches(arch, multilib=True)
+ 
+-        for nsvc, mmd in variant.arch_mmds[arch].items():
++        for nsvc, mmd in variant.arch_mmds.get(arch, {}).items():
+             available_rpms = sum(
+                 (
+                     variant.nsvc_to_pkgset[nsvc].rpms_by_arch.get(a, [])

pungi.spec

@@ -2,13 +2,15 @@
 
 Name:           pungi
 Version:        4.1.38
-Release:        1%{?dist}.2
+Release:        1%{?dist}.2.cloudlinux
 Summary:        Distribution compose tool
 
 License:        GPLv2
 URL:            https://pagure.io/pungi
 Source0:        https://pagure.io/releases/%{name}/%{name}-%{version}.tar.bz2
 
+Patch0: fix_for_build_cl_iso.patch
+
 BuildRequires:  python3-nose
 BuildRequires:  python3-mock
 %if 0%{?fedora} < 31
@@ -204,6 +206,9 @@ nosetests-3 --exe
 %{_bindir}/%{name}-wait-for-signed-ostree-handler
 
 %changelog
+* Thu Dec 03 2020 Sergey Fokin <sfokin@cloudlinux.com> - 4.1.38-1.2.cloudlinux
+- add patch for make possible building CL OS iso
+
 * Thu Jul 25 2019 Stephen Smoogen <smooge@fedoraproject.org> - 4.1.38-1.2
 - Find that I needed to change a libmodulemd elsewhere after it built