It might be new, but they have a way now. I'll just list it here in case anyone has the same question later.
Log in to the server, where you have your Phabricator install, and use ./bin/accountadmin
. That will let you change or add accounts at will. If you just want to look at the user, you can look in the phabricator_user
database and check the user
table or the user_profile
table.