Plugin installations via Composer no longer work due to the wordpress.org ban

[jonlow]

Describe the bug
Plugin installations via Composer no longer work due to the wordpress.org ban

To reproduce

Run a post deploy script using composer and any plugins that use wordpress.org (eg via https://wpackagist.org/) will time out.

Expected behavior

Plugins should install. My understanding was that wpackagist mirrored wordpress.org, but it doesn't seem to be the case?

Build Output & Screenshots