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Environment

• OS: Linux
• Install method: Direct download
• Version: 3.9.1

Describe the bug / provide steps to reproduce it

I am working in an environment that does not have access to the open web. We have created our own Vale package that is hosted on a local GitLab instance; however, when I try to install it using vale sync I get this error:

Get "https://raw.githubusercontent.com/errata-ai/styles/master/library.json": dial tcp: lookup raw.githubusercontent.com on <IP-address>: no such host

Looking at the source code it seems like this is probably an error when it looks at the Vale package hub. Since I do not need access to the hub, it would be nice if the sync command could still work for my locally hosted package.