src/Composer/Repository/Vcs/BitbucketDriver.php
public function getChangeDate($identifier)
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getChangeDate($identifier);
        }

        $resource = sprintf(
            'https://api.bitbucket.org/2.0/repositories/%s/%s/commit/%s?fields=date',
            $this->owner,
            $this->repository,
            $identifier
        );
        $commit = JsonFile::parseJson($this->getContentsWithOAuthCredentials($resource), $resource);

        return new \DateTime($commit['date']);
    }
public function getChangeDate($identifier)
    {
        if ($this->fallbackDriver) {
            return $this->fallbackDriver->getChangeDate($identifier);
        }

        $resource = sprintf(
            'https://api.bitbucket.org/2.0/repositories/%s/%s/commit/%s?fields=date',
            $this->owner,
            $this->repository,
            $identifier
        );
        $commit = JsonFile::parseJson($this->getContentsWithOAuthCredentials($resource), $resource);

        return new \DateTime($commit['date']);
    }
{@inheritdoc}