certificate

cannot verify ftp.drupal.org's certificate, issued by 'CN=GlobalSign Organization Validation CA - SHA256 - G2,O=GlobalSign nv-sa,C=BE'

So Drupal modules and releases are behind https these days. That is great for security!

But trying to download anything with wget leads to:
WARNING: cannot verify ftp.drupal.org's certificate, issued by 'CN=GlobalSign Organization Validation CA - SHA256 - G2,O=GlobalSign nv-sa,C=BE':
  Unable to locally verify the issuer's authority.