I use meld as my git difftool. Often when comparing my current state against a particular branch (for example) like this:
git difftool -d branchname
Unless it's obvious from the code state, I have a hard time figuring out which is my current state, and which is the branch I'm comparing against, as they are both labeled with tmp directories. Is there a way to instruct git to instruct meld to add a more user-friendly title to the left and right panels? (e.g. "branchname" and "HEAD")? I'm up for a little hacking if necessary.