Update deployment run stuck as InProgress

I was running a manual update on a Windows VM via UMC, which failed with the error message "The resource operation completed with terminal provisioning state 'Failed'.", ultimately determined to be caused by the VM running out of available storage.

Anyhow, the problem I now have is that the update deployment run is still "InProgress" and I can't find a way to cancel/abandon it. As it's not actually doing anything it's not that big of a deal, but I'd still like to clean it up from the history. Any ideas how I could do this? Thanks.