pulling a github project into another github project

I have a project on github wh开发者_StackOverflow社区ich uses other repos in github. (I used JQuery , backbone.js , underscore.js in my project) I want to pull those repos from github into my repo (possibly with their history). And time to time I want to update those codes from their github repos. But I still want to commit them in my repo. Is that possible.

Look at git-submodule.