GitHubRef sets the ref of the GitHub repository.

NewGitHubFs creates a new github filesystem.

NewS3Fs creates a new S3 filesystem with the given bucket name.

ReadLimited reads from r until limit bytes or EOF, whichever comes first.

ErrNotDir is returned when something is not a directory.

ErrOverSized is the error when the reader exceeds the limit.

ErrReadonly is returned when this filesystem is readonly.

ErrUnimplemented is returned when a method is not implemented.

GitHubFsOption is the option for NewGitHubFs.