Addition: Toggle back to the part of the tree you just came from

[thepeoplesbourgeois]

This is a toggle, so it won't allow you to page back through an arbitrary number of locations on the tree, but it is suuuuuper useful for when you've to flip to someplace really quick and then back to where you came from.

your-branch  $ git checkout their-branch
their-branch $ git log -p # or whatever y'all're on this branch to do
their-branch $ git checkout -
your-branch  $ git checkout - 

And it works with SHAs, too!

your-branch $ git checkout s0mesha
s0mesha[…]  $ git checkout -
your-branch $ git checkout -
s0mesha[…]  $