Option to throw if fetching a template fails

[MuhammadM1998]

Describe the feature

Hello 👋

I'm using a Nuxt layer with the GitHub repo approach which lacks the versioning we would get if it were a npm package.
Hence I want to make sure that I'm using the latest layer commit and otherwise fail to catch bugs as early as possible.
Currently, If I set any incorrect GIGET_AUTH env (Repo is private) it doesn't throw an error and uses the currently folder in node_modules.
A flag that throws an error and/or warning if fetching the repo fails would be great! Thanks a lot!

Additional information

• Would you be willing to help implement this feature?