How to combine multiple GIT repositories into a repository

I have three repositories, I want to combine into a respository.

For example:
repository01,url:remote_repository01_url
repository02,url:remote_repository01_url
repository03,url:remote_repository01_url



Step1:Build a new repository.

	mkdir new_respository
	cd new_respository
	git init
	echo "combine git" >> README.md
	git add README.md
	git commit -m 'initial git repository'

view raw Build a new repository hosted with ❤ by GitHub

Step2:Merge new_respository and repository01.

	#add remote repository and merge to new_respository
	git remote add repository01_name remote_repository01_url
	git fetch repository01_name
	git checkout -b repository01_name repository01_name/master
	git checkout master
	git merge repository01_name
	# save merged message

view raw Merge new_respository and repository01 hosted with ❤ by GitHub

Step3:Move repository01 to new location in new_repository

	mkdir repository01
	git mv * repository01/
	# You should move files or directories that do it a object by a command.
	git commit -m 'move repository01 source'
	git remote remove repository01

view raw Move repository01 to new location in new_repository hosted with ❤ by GitHub

Final:
I just repeat Step2 and Step3 for other repostories.