I can't find the source repo either (source must be made available, can be on-demand to the author, hell the author could send it to you on CD-ROMs if they felt like it and still be compliant).

That said, it makes an ABP-compatible filter list available. This works with ublock origin:

https://www.i-dont-care-about-cookies.eu/abp/

See the author's comment here: https://www.reddit.com/r/privacy/comments/bru6wd/please_help...

The source code can be extracted from the extension file itself.