Gitaly: possible to avoid local filesystem or NFS, and use object storage instead?

It is possible to run Gitaly without any storage on the local filesystem or NFS, i.e. no block storage; and instead use a remote object storage provider, like S3?

The closest information I have found it, but I think that this doesn’t cover storing the bulk of a git repo’s data. It would all still have to be local to Gitaly on the filesystem?