docs/data/reusables/rest-reference/gitignore/gitignore.md

When you create a new repository on {% ifversion ghae %}{% data variables.product.product_name %}{% else %}{% data variables.product.product_location %}{% endif %} via the API, you can specify a .gitignore template to apply to the repository upon creation. The .gitignore templates API lists and fetches templates from the {% data variables.product.product_name %} .gitignore repository.

Custom media types for gitignore

You can use this custom media type when getting a gitignore template.

application/vnd.github.VERSION.raw

For more information, see "Media types."