I want to include the ABNF definition[1] for scfg in an article.

[1]: https://git.sr.ht/~emersion/scfg#specification-draft

The repo specifies: This specification text is licensed with CC-BY-SA 4.0.

The SA means that I need to keep attribution, but there is no attribution
in this repo.

Does it need something like "Copyright (c) 202X ..."?

Cheers,

-- 
Hugo

Thanks for letting me know and for taking care about such details, I've
pushed a copyright line!

Thanks!