nixpkgs/pkgs/build-support/fetchgit/builder.sh

source $stdenv/setup

header "exporting $url (rev $rev) into $out"

git clone "$url" $out
if test -n "$rev"; then
  cd $out
  git checkout $rev
fi

if test -z "$leaveDotGit"; then
    find $out -name .git\* | xargs rm -rf
fi

stopNest