src/Composer/Repository/Vcs/HgDriver.php
public function getChangeDate($identifier)
    {
        $this->process->execute(
            sprintf(
                'hg log --template "{date|rfc3339date}" -r %s',
                ProcessExecutor::escape($identifier)
            ),
            $output,
            $this->repoDir
        );

        return new \DateTime(trim($output), new \DateTimeZone('UTC'));
    }
public function getChangeDate($identifier)
    {
        $this->process->execute(
            sprintf(
                'hg log --template "{date|rfc3339date}" -r %s',
                ProcessExecutor::escape($identifier)
            ),
            $output,
            $this->repoDir
        );

        return new \DateTime(trim($output), new \DateTimeZone('UTC'));
    }
{@inheritdoc}