That's a detail of the extraction tool. In umoci (which extracts tar archives as part of an OCI image)[1] you can remap the users or even extract as yourself an

That's a detail of the extraction tool. In umoci (which extracts tar archives as part of an OCI image)[1] you can remap the users or even extract as yourself and then add an xattr which represents the original owner in the archive (which is then read back when creating a new tar archive from the delta of the rootfs). [1]: https://github.com/openSUSE/umoci https://github.com/openSUSE/umoci