Offline installer for linux

Yes i am a debain linux user and want to try unreal engine in my machine…
I have no internet in my home so, i was deciding to download unreal engine from github in my office and then build in my computer…
Als!! it is still ask for extra 5GB file to install .
So please provide me the full source so that i can install it in my computer
ANY HELP WILL BE GREATLY APPRECATED PLEASE!! AND THANKS IN ADVANCE

Sorry but there is no official download package of the engine source, github is the correct way to go.