that image is an *imported* system image, we are almost certainly
referring to a version related to the origin image, not the local
copy (which is not in sync with the origin wrt the history). In that
case, we can use the hash from the image server to track down the local
version.

Aside; If I were going to redo the import mechanism, I would make image
provenance the default for everyone, and make the option be whether to
save or delete the image file (that was the entire reason I made
provenance optional, most sites especially geni racks, do not have
enough storage to maintain old images. And image import would always
import the history too, which is something I did later when we thought
deltas were going to solve our problems.