Comment # 5 on bug 1093731 from Fabian Vogt

(In reply to Larry Finger from comment #4)
> (In reply to Fabian Vogt from comment #3)
> > (In reply to Larry Finger from comment #2)
> > > In my local builds, Qt 5.10 is being used. What osc options, or changes to
> > > the spec file will force 5.11?
> > 
> > It's not in Tumbleweed yet, just build against
> > openSUSE:Factory:Staging:L:DVD/standard.
> 
> Unfortunately, I do not know the osc magic incantation for that to happen.
> My skill set lets me build against Kernel_HEAD_standard, but that is my
> limit.

The easiest way is to branch from the staging:

osc bco --nodevelproject openSUSE:Factory:Staging:L:DVD virtualbox