regex - bash expression to get the jira key out of git commit -


i have below code in jenkins configuration in execute shell

jira_key=$(curl --request "http://jenkins-server/job/myproject/job/mysubproject/job/mycomponent/${build_number}/api/xml?xpath=/*/changeset/item/comment" | sed -e "s/<comment>\(.*\)<\/comment>/\1/")

the result of above command is

jira_key=<comment>jra-1011 commit           message.          </comment>

i not sure how can improve above expression start , end tags excluded result.

however ultimate goal extract jira key first word in comment i.e. jra-1011 , store in jira_key. once tags excluded can first word command

set -- $jira_key jira_key=$1

is there other better way this?

the xml 

<freestylebuild _class="hudson.model.freestylebuild">     <changeset _class="hudson.plugins.git.gitchangesetlist">         <item _class="hudson.plugins.git.gitchangeset">             <comment>                 jra-1011 commit                  message.             </comment>         </item>     </changeset> </freestylebuild>


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