Where does Stack Overflow store GitHub profile links?

I was going through Stack Overflow db structure on https://data.stackexchange.com/stackoverflow/queries and wondering where the user's GitHub link is.

I can see the website URL listed against user in schema but there is no field referencing GitHub profile link?

This is a cross-site duplicate of Why are links to social media and GitHub not appearing in the SE data dump? (And SEDE).

There a Stack Exchange developer says:

Those don't appear in the data dump or in SEDE because the social media/GitHub links aren't stored in the Users table - it only has the WebsiteUrl column.

The others links are stored in a separate UsersMetadata table that isn't included in any of the public data dumps.

You can also see that the additional links are not in the Stack Exchange API.

There does not seem to be a compelling reason why these public links are unavailable other than Stack Exchange has so far, de facto, decided that it was not a cost-effective use of dev time.

You can try creating a feature request on Meta Stack Exchange...