expand-all-packfiles

#!/usr/bin/env bash

set -euo pipefail

git_dir="$(git rev-parse --show-toplevel)/.git"

tmp_dir=$(mktemp -d)

shopt -s nullglob
for f in "$git_dir/objects/pack/"pack-*.pack
do
    echo "Unpacking $f"
    mv "$f" "$tmp_dir/packfile"
    git unpack-objects < "$tmp_dir/packfile"
done
shopt -u nullglob

echo "Cleaning up packfile indexes"
# Cleanup all index files, we just removed all the packfiles
rm -f "$git_dir/objects/pack/pack-*.idx"

# Cleanup references to the old packfiles
echo "Running git fsck"
git fsck


exit 0 # not sure if ref expansion is needed yet

echo "Expanding refs"
while read -r line
do
    sha="$(echo $line | cut -c1-40)"
    path="$(echo $line | cut -c42-)"
    echo "Writing $sha to $path"
    echo "$sha" > "$git_dir/$path"
done < <(git show-ref)