To prevent 'Cloned Jira Work Item' from 'Exalate operation' when Trigger is in action

From customer:

Is it possible to change the trigger somehow to only run on “Update/Change” issue, and not on
create? I have it set to specific project, custom field value and label value, but when a ticket is cloned it will actually Exalate the cloned issue when it is created.

As an alternate solution, we can this snippet into Outgoing Sync in the beginning, and here we are taking the keyword "CLONE - " from ‘Summary’ because when a Jira Work Item is cloned, so it adds that keyword unless a user is removing it, then it will unfortunately not work.

if(issue.summary.toString().startsWith("CLONE - "))
{
    return;
}
else
{