use subprocess.Popen instead of os.system so we don't have to cd
use subprocess.Popen instead of os.system so we don't have to cd

fedora-infra/fedora-packages,Fale/fedora-packages,fedora-infra/fedora-packages,Fale/fedora-packages,Fale/fedora-packages,fedora-infra/fedora-packages,fedora-infra/fedora-packages