com.github.gist is the identifier for the package provider of GitHub Gists.

This provider enables sourcing the contents of a single-file GitHub Gist (ergo, a Gist with only one file).

instdat.repo_owner

The owner of the target Gist.

instdat.repo_name

The identifier of the target Gist. (This is named this way for consistency with com.github and because Gists are technically repositories.)

instdat.repo_ref

The Git reference (a commit) of the target repository.