Accidentally `git reset --hard`? Get em all back

gistfile1.sh

#!/bin/bash

# output all files in index that haven't been garbage collected
git fsck --cache --unreachable $(git for-each-ref --format="%(objectname)") > badfiles

# output all files by showing them via sub-hash
FILENUM=1
cat badfiles | cut -c 18-24 | while read cur
do
  git show $cur > $FILENUM
  let "FILENUM += 1"
done