GIT move files from folder to subfolder

I have the following folder structure.

Service
|
-- App1
  |
  --- bin
  |
  --- file1
  |
  --- file2
|
--App2
  |
  --- bin
  |
  --- file1
  |
  --- file2
  |
  --- file3
|
--App3
  |
  --- bin
  |
  --- file1
  |
  --- file2

I'm looking to move files only from the root of App folders to their corresponding bin folders whilst preserving GIT history. So the end result should be:

Service
|
-- App1
  |
  --- bin
     |
      --- file1
     |
      --- file2
|
--App2
  |
  --- bin
     |
      --- file1
     |
      --- file2
     |
      --- file3
|
--App3
  |
  --- bin
     |
      --- file1
     |
      --- file2

I attempted the following...

#!/bin/bash

dir1="/c/Service"

subs=ls $dir1

for i in $subs; do
  git mv $dir1/$i/* $dir1/$i/bin/
done

...but see the following errors: *fatal: can not move directory into itself* *fatal: Invalid path '/c': No such file or directory* Any help appreciated.