There may not be much you can do other than setting up back-up hosting just in case you ever lose your current hosting. It can be just a plain git mirror that i

There may not be much you can do other than setting up back-up hosting just in case you ever lose your current hosting. It can be just a plain git mirror that is mentioned in your readme, so that if your users notice the repository at the primary host going stale they'll know where to check for future updates.