I often put work away for later, then other stuff comes along, and a few weeks later, I want to inspect the stash, and find out what changes it would make if I applied it to
To view all the changes in an un-popped stash:
git stash show -p stash@{0}
To view the changes of one particular file in an un-popped stash:
git diff HEAD stash@{0} -- path/to/filename.php