$ git clone -n https://src.fedoraproject.org/rpms/vdr-tvscraper.git /var/lib/mock/f40-build-1873829-25023/root/chroot_tmpdir/scmroot/vdr-tvscraper
Cloning into '/var/lib/mock/f40-build-1873829-25023/root/chroot_tmpdir/scmroot/vdr-tvscraper'...
$ git fetch origin a90ccbef67d6cf2387b4c05ea5d654b64ede488c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-tvscraper
 * [new ref]         a90ccbef67d6cf2387b4c05ea5d654b64ede488c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a90ccbe Rebuilt for new VDR API version 2.6.9