Where's the source code for sourcedir from script_uris?

[neo]

I was looking at the Amazon_JumpStart_Text_To_Image example and saw script_uris.retrieve would return something like:

s3://jumpstart-cache-prod-us-east-1/source-directory-tarballs/stabilityai/inference/txt2img/v1.2.2/sourcedir.tar.gz

I wonder whether this "source-directory" is open source somewhere 🤔

(I know I could download it from s3, but would be great if there is a canonical source of the code on github)