Fail if local branch doesn't match remote branch

    return True

def ensure_branches_up_to_date(branches: List[str], base_branch: str, upstream: str, galaxy_root: pathlib.Path):

    for branch in branches:

        subprocess.run(["git", "checkout", branch], cwd=galaxy_root).check_returncode()

        # Check that the head commit matches the commit for the same branch at the specified remote repo url

        result = subprocess.run(["git", "ls-remote", upstream, f"refs/heads/{branch}"], capture_output=True, text=True)

        result.check_returncode()

        remote_commit_hash = result.stdout.split("\t")[0]

        result = subprocess.run(["git", "rev-parse", "HEAD"], capture_output=True, text=True)

        result.check_returncode()

        local_commit_hash = result.stdout.strip()

        if remote_commit_hash != local_commit_hash:

            raise Exception(

                f"Local tip of branch {branch} is {local_commit_hash}, remote tip of branch is {remote_commit_hash}. Make sure that your local branches are up to date and track f{upstream}."

            )

    subprocess.run(["git", "checkout", base_branch], cwd=galaxy_root).check_returncode()

def push_references(references: List[str], upstream: str = "https://github.com/galaxyproject/galaxy.git"):

    for reference in references:

        subprocess.run(["git", "push", upstream, reference]).check_returncode()

        click.confirm("Does this look correct?", abort=True)

    base_branch = current_branch = get_current_branch(galaxy_root)

    newer_branches = get_branches(galaxy_root, new_version, base_branch)

    all_branches = newer_branches + [base_branch]

    click.echo("Making sure that all branches are up to date")

    ensure_branches_up_to_date(all_branches, base_branch, upstream, galaxy_root)

    click.echo("Making sure that merging forward will result in clean merges")

    merge_required = False

    for new_branch in newer_branches:

        merge_required = is_merge_required(base_branch=current_branch, new_branch=new_branch, galaxy_root=galaxy_root)

        if merge_required:

            if click.confirm("Continue anyway ?", abort=True):

                current_branch = new_branch

                break

    subprocess.run(["git", "checkout", base_branch], cwd=galaxy_root)

    subprocess.run(["git", "checkout", base_branch], cwd=galaxy_root).check_returncode()

    modified_paths = [set_root_version(galaxy_root, new_version)]

    # read packages and find prs that affect a package

    packages: List[Package] = []

        click.echo(f"Merging {base_branch} into {new_branch}")

        merge_and_resolve_branches(galaxy_root, current_branch, new_branch, packages)

        current_branch = new_branch

    references = [release_tag, base_branch] + newer_branches

    references = [release_tag] + all_branches

    if no_confirm or click.confirm(f"Push {','.join(references)} to upstream '{upstream}' ?", abort=True):

        push_references(references=references, upstream=upstream)