Import patch into working copy without commit.
Created originally on Bitbucket by datallah (Daniel Atallah)
Currently, it isn't possible to import a patch into the WC without it being committed.
It would be ideal if the Import dialog supported a checkbox for "--no-commit" and another for "--force" to allow importing the patch into an unclean WC.
In my case I had a need to apply several patches during the migration of my developer environment from SVN to Hg and I had to drop to the command line to do so.
I can see how this would be also useful in the case where you're receiving a patch from someone external that you want to test before committing.