Merge branch 'rodrigo/fetch-github-source-name' into 'master'

Fetch GitHub user name when creating source user

See merge request https://gitlab.com/gitlab-org/gitlab/-/merge_requests/175313



Merged-by: Luke Duncalfe <lduncalfe@gitlab.com>
Approved-by: Luke Duncalfe <lduncalfe@gitlab.com>
Reviewed-by: Luke Duncalfe <lduncalfe@gitlab.com>
Co-authored-by: Rodrigo Tomonari <rtomonari@gitlab.com>