E.g. borg check [--repository-only] --incremental. Checks all data since last borg check --incremental invocation. Saves last checked segment into the repository config, continues from there when called again.

Guess this could be extended to archives as well by storing the last --incremental timestamp in the manifest.

bounty: https://www.bountysource.com/issues/38004309-incremental-repository-check