move all files of current directory into subdirectory and maintain history

Question

How can I move all the files of my current directory into a new directory and retain the history.

I have tried:

git mv . old_app

But I

Answer 1

On Windows you can use:

FOR %F IN (*) DO IF NOT %F == old_app git mv %F old_app
FOR /D %D IN (*) DO IF NOT %D == old_app git mv %D old_app

If you're doing this in a batch file, you'll need to use %%F and %%D instead of %F and %D, respectively.

Answer inspired by https://superuser.com/a/112141 .