$ git clone -n https://src.fedoraproject.org/rpms/perl-GraphViz.git /var/lib/mock/f45-build-23824-599/root/chroot_tmpdir/scmroot/perl-GraphViz
Cloning into '/var/lib/mock/f45-build-23824-599/root/chroot_tmpdir/scmroot/perl-GraphViz'...
$ git fetch origin 8f3d634f86f71506300ed48c14afb83a3cc7b6de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-GraphViz
 * [new ref]         8f3d634f86f71506300ed48c14afb83a3cc7b6de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8f3d634 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild