Not sure if that is possible, but if a guy is using SVN to download the trunk, then needing to roll back to a previous version of trunk its confusing and you pretty much have to guess the SVN version from the fog version.
Thought it would be convenient to have those versions match the fog version in the cloud.
I am not an expert in SVN/GIT, but I usually use SVN because of the easy downloading of a specific revision.
EDIT: Or list both version numbers in the cloud if it isnt possible.
fog/management/index.php?node=about page to list the SVN version would work as well