Failed To Checkout Ref Error

[Nusiq]

When Regolith tries install a filter from cache sometimes you may get this error:

This is caused by our caching system. When the author of the filter decides to force push some changes to their repository, after someone pulls the repository into their cache by installing a filter, this causes the repository to have two versions of history - one on the internet and one in local cache. Regolith is not able to handle this situation and throws an error.

The error is not descriptive enough. We should either improve the error message in this situation, or make regolith redownload the repository.