Comment # 1 on bug 1022973 from Adrian Schr�ter

Seems to be caused by a commit in future of that repo.
(we use the commit time as timestamp for all files since git is not providing
timestamps of files).

This should avoid this in future
https://github.com/openSUSE/obs-service-tar_scm/pull/131

But your build should also work now, since it was just a few hours off.