In https://pagure.io/koji/issue/776 support was added in Koji to add timestamps to build logs. This is configurable on a global basis and is disabled by default since it doubles the size of the log files. Enabling this globally makes sense in situations where you are interested in all builds going through Koji, but sometimes there is just a particular build that is being slow. In that case it would be helpful to be able to enable the timestamp logs for that one build and to do that at build time.