I found that Clockfort's Github-Backup is good for downloading an account's repositories en masse. It only supports repos though, and not metadata like issues,

I found that Clockfort's Github-Backup is good for downloading an account's repositories en masse. It only supports repos though, and not metadata like issues, comments, wikis, pull requests, etc. https://github.com/clockfort/GitHub-Backup https://github.com/clockfort/GitHub-Backup