This repository contains all the bundles that are distributed by bndtools. We pledge to never remove this bundlehub, nor ever to make changes to an artifact once deployed. So as long as github survives you're ok.
You can add a new artifact if you've write access. The easiest way to do this is to use bnd.
$ bnd put --repo . put https://exmple.com/bundles/mybundle.jar ...
See 'bnd help repo put' for more information. Alternatively you can just copy the files to /-.jar (notice that version must have no qualifier and have all 3 nummeric parts. This is the standard repo format.
After you've added a number of bundles you must update the index.
$ ./gradlew