release-koji: Add additional included sources in the git repository
release-koji: Add additional included sources in the git repository

Closes #78
Signed-off-by: Stef Walter <8a7fbf0f15d3ad982af54ef28f5c117d2494b76c@redhat.com>
 * Fixed spacing and case where no additional sources are present
Signed-off-by: Nikos Mavrogiannopoulos <df6e1a462b5068e7cd37b5ebdba5d9f6b4da01fc@redhat.com>

stefwalter/cockpituous,cockpit-project/cockpituous,cockpit-project/cockpituous,stefwalter/cockpituous