move files between disparate repos and maintain version history

Using git-svn at work, and had to do some svn moves that I'm wondering
would be handled with git?

Our repo is setup like this:

$SVNROOT/main/core/{trunk,tags,branches}
$SVNROOT/main/app/{trunk,tags,branches}

core and app are treated as different project roots internally, and my
git-svn treats them as such.

We recently needed to move some files from app to core.  I could've
just moved them in between my git repos, but the version history would
be lost, since these are two separate repos.  I did the move via svn
mv, which works simply because our "separate projects" are really just
in the same SVN repo.

So, is there a way I can move a file between two git repositories,
maintaining the change history?  I guess it would be something like
"apply all patches that this file was involved in, but ONLY apply the
ones affecting this file, to the new repo, then delete from the old"?