We developed a custom plugin to capture events on Bitbucket Server. Push events are captured using below event but it do not capture commit message for each Refchange.
com.atlassian.bitbucket.event.repository.RepositoryPushEvent
Multiple RefChange’s can be part of each push event so we want to get commit message for each RefChange. fromHash,toHash,type can be captured but we want to get commit message as well for analytical purpose. We could not find any other class part of RepositoryPushEvent which provide commit message