Not sure to whom it will be interesting, but you could use IDEA diff to see diff in files between branches without loading the whole project into IDEA:

git show origin/master:path/to/file > /tmp/master_file && idea diff /tmp/master_file path/to/file

Nice - I’ll try to remember that - that’s really cool 🙂

probably you could create shell alias that will invoke something like this:

idea-diff origin/master path/to/file