https://bugzilla.redhat.com/show_bug.cgi?id=1327557
--- Comment #1 from Michael Simacek msimacek@redhat.com --- I'm aware of the problem and I filled a pull request for mash some time ago already. I talked to Dennis and he said that mash is going to be replaced with pungi within few weeks (it already does rawhide composes AFAIK). The problem has been fixed for rawhide, but unfortunately, for f23, we'll need to wait until pungi is deployed for f23 updates. After that, nosync would need to be added to f23 whitelist, but relengs are generally reluctant to change multilib configuration for stable fedoras, so I cannot promise that it can be fixed.