$ git clone -n https://src.fedoraproject.org/rpms/vrpn.git /var/lib/mock/f45-build-38161-722/root/chroot_tmpdir/scmroot/vrpn
Cloning into '/var/lib/mock/f45-build-38161-722/root/chroot_tmpdir/scmroot/vrpn'...
$ git fetch origin 4cc4ad025ba1cf8d4149ebba2781f7d22e4b79bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vrpn
 * [new ref]         4cc4ad025ba1cf8d4149ebba2781f7d22e4b79bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4cc4ad0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild