$ git clone -n https://src.fedoraproject.org/rpms/vdr-vnsiserver.git /var/lib/mock/f45-build-38011-719/root/chroot_tmpdir/scmroot/vdr-vnsiserver
Cloning into '/var/lib/mock/f45-build-38011-719/root/chroot_tmpdir/scmroot/vdr-vnsiserver'...
$ git fetch origin ad3947b984247173c88badb7b2ce35e38b4d4b60:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vdr-vnsiserver
 * [new ref]         ad3947b984247173c88badb7b2ce35e38b4d4b60 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad3947b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild