Hi!
Today we have enabled OAuth app access restrictions on the Wikimedia GitHub organization[0]. As a result, any attempt to add an OAuth app requires the approval of the WIkimedia organization's owners[1]. This restriction was enabled to prevent accidentally granting OAuth permissions to the organization's resources when that was not the intention.
As a side effect, if your ssh key has been uploaded before February 2014, the next attempt to push over ssh to a wikimedia project (for example: git@github.com/wikimedia/*) will result in a prompt asking you to manually validate the key. Just click the link, verify the fingerprint and approve it if it is the correct one.
Thanks! -- Tyler
[0]: https://phabricator.wikimedia.org/T234991 [1]: https://github.com/orgs/wikimedia/people?query=role%3Aowner