i am working with SourceTree with the Git Flow model.

out of the develop branch i pulled two feature branches (feature3 and feature39)

both features are not yet complete so they have not been merged back to dev.

I worked on feature 3 and after getting to a some point, I moved to feature 39 and worked on it for a while

to be able to continue with feature3 i need some specific file changes made in feature39 (not a whole commit) and preferably only parts of files.

searching over the web i found this http://jasonrudolph.com/blog/2009/02/25/git-tip-how-to-merge-specific-files-from-another-branch/
which discusses how to pull only specific files from a branch to another branch

please add this feature to source tree.
also, please add an option to run the whole thing manually thus allowing me to control which hunks go from one branch to the other