Currently, for example for https://github.com/wikimedia/analytics-quarry-web the description reads:
Github mirror of "analytics/quarry/web" - our actual code is hosted with Gerrit (please see https://www.mediawiki.org/wiki/Developer_access for contributing
(BTW, missing ")".) This means I need to open a tab with Gerrit, click on "Project", "List", type in "analytics/quarry/web" as filter, and then click on the project to receive information how I can clone the repository for reviews with Gerrit, etc. If I'm a newcomer, going through https://www.mediawiki.org/wiki/Developer_access probably adds quite some time to that.
Instead, the description should read:
GitHub mirror of https://gerrit.wikimedia.org/r/#/admin/projects/analytics/quarry/web – please see https://www.mediawiki.org/wiki/Developer_access for contributing. Thanks!
This removes possible confusion about what "Gerrit" and "actual code" mean and points directly to the source.