The glTF-Registry repository contains the glTF 2.0 Specification, as well as links to older specifications and extensions in GitHub.
It is also used as a backing store for the web view of the registry at https://www.khronos.org/registry/glTF/. Commits to the main branch of this repository will be reflected there.
Interesting files in this repository include:
index.php- toplevel index page for the web view. This relies on PHP include files found elsewhere on www.khronos.org and so is not very useful in isolation.specs/- glTF specification documents.