How to tell which remote svn branch is a local git branch tracking?

Question

I'm a bit confused about how to commit on several svn branches from different local git branches. In particular, even though I've read many of the relates questions on this topic, there's one specific thing that nobody seems to have explained so far:

if I already have a few local branches, how can I tell which remote svn branch they are tracking (if any)?

From this answer it seems that you can change the branch you want to be tracking, but how to query it?

git branch -v doesn't seem to be particularly helpful in this (i.e. no additional information is given). I've also looked into all textual files in .git/ but couldn't find anything in there as well.