gistfile1.txt

#!/bin/bash

git init

du -sh .

for n in 1 2 3 4 5 6 7 8 9 10; do
    dd if=/dev/urandom of="$n.foo" bs=1024 count=10240
done

git add .
git commit -m '100MB of junk'

du -sh .

for n in 1 2 3 4 5 6 7 8 9 10; do
    dd if=/dev/urandom of="$n.foo" bs=1024 count=10240
done

git add .
git commit -m '100MB more of junk'

du -sh .

git rm *.foo
git commit -m 'Delete'

du -sh .