Description of problem: copr allows to build from srpm only, which makes it hard to provide patches for spec, there is a risk of losing srpm and we cannot provide guaranteed builds. So, this is a request for having a git repository (might be a dist-git variant) for all users of copr. If there is already something happening about it, let's track it using this bug.
We have recently deployed copr with the dist-git instance. We still require an srpm as a source, direct edition of the .spec from Copr UI can be a future work. If somebody wants such functionality, please open a new issue.