JIRA_KEY=$(curl --request GET "http://jenkins-server/job/myProject/job/mySubProject/job/myComponent/${BUILD_NUMBER}/api/xml?xpath=/*/changeSet/item/comment" | sed -e "s/<comment>(.*)</comment>/1/")

JIRA_KEY=$(echo $JIRA_KEY | cut -c10-17)

<freeStyleBuild _class="hudson.model.FreeStyleBuild">
    <changeSet _class="hudson.plugins.git.GitChangeSetList">
        <item _class="hudson.plugins.git.GitChangeSet">
            <comment>
                JRA-1011 This is commit
                message.
            </comment>
        </item>
    </changeSet>
</freeStyleBuild>