rewrite-history.sh

PREFIX=data
SQL=/tmp/rewrite-history.sql

:>$SQL

git filter-branch \
  --index-filter '
    git ls-files -s |
    sed "s,\t,&'"$PREFIX"'/," |
    GIT_INDEX_FILE=$GIT_INDEX_FILE.new git update-index --index-info &&
    mv $GIT_INDEX_FILE.new $GIT_INDEX_FILE
  ' \
  --commit-filter '
    n=$(git commit-tree "$@")
    echo "UPDATE patch_sets SET revision = '\''$n'\'' WHERE revision = '\''$GIT_COMMIT'\'';" >> '$SQL'
    echo $n
  ' HEAD