Build with local not yet published release tar.gz

Created using: git archive --format=tgz --prefix=icinga2-2.12.5/ v2.12.5

icinga2.spec

@@ -92,7 +92,7 @@ Name:           icinga2
 Version:        2.12.5
 Release:        %{revision}%{?dist}
 Url:            https://www.icinga.com/
-Source:         https://github.com/Icinga/%{name}/archive/v%{version}%{?src_version_suffix}.tar.gz
+Source:         v%{version}%{?src_version_suffix}.tar.gz
 
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 Requires:       %{name}-bin = %{version}-%{release}