Script to deploy a target directory to `gh-pages` branch.

gh-pages-deploy.sh

#!/bin/bash
directory=_site
branch=gh-pages
build_command() {
  jekyll build
}

echo -e "\033[0;32mDeleting old content...\033[0m"
rm -rf $directory

echo -e "\033[0;32mChecking out $branch....\033[0m"
git worktree add $directory $branch

echo -e "\033[0;32mGenerating site...\033[0m"
build_command

echo -e "\033[0;32mDeploying $branch branch...\033[0m"
cd $directory &&
  git add --all &&
  git commit -m "Deploy updates" &&
  git push origin $branch

echo -e "\033[0;32mCleaning up...\033[0m"
git worktree remove $directory

Clever use of worktrees. Thanks for sharing this!