Can't retrigger the build upon an unsuccessful srpm build or import

[praiskup]

Can't retrigger the this build

Package: procenv
Version: 0.60-7 
Source Type: Build from DistGit
Clone_Url: https://copr-dist-git.fedorainfracloud.org/git/praiskup/test-procenv/procenv.git

Upon a failed import .. which clearly is a Copr mistake, so not being able to retrigger might frustrate users.

[praiskup]

Here I typoed the dist-git instance, rpmbuild tried 10x to clone from a non-existing url, and failed: https://copr.stg.fedoraproject.org/coprs/praiskup/test-procenv/build/2914711/

This should be re-triggerable too :-)