Good Morning to everyone,
Just an update in order to save you some time.
Magento 2 repo seems to need an access token update.
Visit your magento.marketplace account (ignore our know public/private key) and go to Profile.
You can easily find the MageID and after that create the new download access code.
curl -k https://**MAGeid**:**firstname.lastname@example.org/products/downloads/info/help