private function checkoutBranch(OutputInterface $output, $branch, $tmpDirectory)
{
$output->writeln("Checking out branch <info>{$branch}</info>");
try {
$this->git->checkoutOriginBranch($tmpDirectory, $branch);
} catch (CommandException $e) {
// The branch doesn't exist yet, so we create it
try {
$this->git->createBranch($tmpDirectory, $branch);
} catch (CommandException $e) {
throw new \RuntimeException("Unable to create the branch '{$branch}'" . PHP_EOL . $e->getMessage());
}
}
}
