title="${GITHUB_PULL_REQUEST_TITLE:-Merge$head branch into $base branch}"
body="${GITHUB_PULL_REQUEST_BODY:-Created automatically by script \`${0##*/}\` in the [DevOps Bash tools](https://github.com/HariSekhon/DevOps-Bash-tools) repo}"
body="${GITHUB_PULL_REQUEST_BODY:-${body_template:-Created automatically by script \`${0##*/}\` in the [DevOps Bash tools](https://github.com/HariSekhon/DevOps-Bash-tools) repo}}"
total_commits="$(gh api "/repos/$owner/$repo/compare/$base...$head" -q '.total_commits')"
if["$total_commits" -gt 0];then
# check for existing PR between these branches before creating another