During the early phases of a (team) project on GitHub, I had copy-pasted the Apache Software Foundation's license header into our code as opposed to the usual License header. I hadn't realized for quite some time (as I, like most people, tune-out license headers) that the header I had pasted contained the following:
Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. [...]
Now, if this had been a small (solo) project I would have just changed this to the correct one without letting anyone know. However, the project in question has about 100 stars on GitHub and a handful of forks, though most of these seem to be "archive"-forks and hence don't contain any extra commits (the ones which do contain work are those of the team members). This incorrect header has been in place for several months now, with nobody having noticed.
What are my options? I doubt the Apache team cares about owning our code, so would my best bet be to just change the license headers throughout the repo's history, and then try to get people to update their forks (is this part even necessary)?