Koschei - continuous rebuilds for packages

[jpacner at redhat.com]

Hi Petr,

> The rebuilds run in koji. You cannot get scratch build into koji build
> root. You would need separate koji build target tag for that.

I understood that Koschei does it anyway (to be able to rebuild the
dependency subtree). Either way, it doesn't sound problematic to create
temporary tags (although I'm not sure about performance penalty).

-- Jan Pacner