Documentation for podman import:

reference, if present, is a tag to assign to the image.

What happens to podman import if reference is not present?

Does podman save imported content from a tarball as a filesystem image? With what tag?

Here is an example:

$ podman import 758f677cf339-backup.tar
Getting image source signatures
Copying blob f49f459e4c71 done
Copying config 5bb687b1cc done
Writing manifest to image destination
Storing signatures
sha256:5bb687b1cc904a19a34bf8e63e2b1b5cc0d8400b0f2c6709ff44222176234369

Here we see that in podman import the reference is not present. How to find the tag (if any) assigned to the image?