tests: make sure that git-branch is not being set to None
tests: make sure that git-branch is not being set to None

projectatomic/osbs-client,vrutkovs/osbs-client,vrutkovs/osbs-client,bfontecc007/osbs-client,bfontecc007/osbs-client,DBuildService/osbs-client,DBuildService/osbs-client,projectatomic/osbs-client