def find_issues_for_pull_request(jira, pull_request_url):
    """
    Find corresponding JIRA issues for a given GitHub pull request.

    Arguments:
        jira (jira.JIRA): An authenticated JIRA API client session
        pull_request_url (str)

    Returns:
        jira.client.ResultList[jira.Issue]
    """
    jql = 'project=OSPR AND cf[10904]="{}"'.format(pull_request_url)
    return jira.search_issues(jql)