$ git clone -n https://src.fedoraproject.org/rpms/vdr-tvscraper.git /var/lib/mock/f42-build-3426614-45197/root/chroot_tmpdir/scmroot/vdr-tvscraper
Cloning into '/var/lib/mock/f42-build-3426614-45197/root/chroot_tmpdir/scmroot/vdr-tvscraper'...
$ git fetch origin bfe28cc0e12005676f5c69694ceb3cb957051f90:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-tvscraper
 * [new ref]         bfe28cc0e12005676f5c69694ceb3cb957051f90 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bfe28cc Rebuilt for new VDR API version 2.7.4