Welcome to hpodder. Hpodder is a tool to scan and download podcasts. Such tools are often called podcatchers.
hpodder is a command-line tool for Linux and other POSIX systems (FreeBSD, MacOS X, etc). It has quite a few features. A few highlights are that it is easy to learn and use, has automatic discovery of feed metadata, and can import iPodder settings.
John Goerzen no longer listens to podcasts, and doesn’t have much time to maintain this software. A new maintainer is being sought. In the interim, well-tested patches may still be applied but there isn’t enough time for anything else.
You can always download the source from the Downloads page and attach diffs. But it’s far better, both for you and for me, if you use Git.