$ git clone -n https://src.fedoraproject.org/rpms/freedoom.git /var/lib/mock/f45-build-9218-400/root/chroot_tmpdir/scmroot/freedoom
Cloning into '/var/lib/mock/f45-build-9218-400/root/chroot_tmpdir/scmroot/freedoom'...
$ git fetch origin 3d009fe2ee92727c1d2d5a4f944776be1ef13090:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/freedoom
 * [new ref]         3d009fe2ee92727c1d2d5a4f944776be1ef13090 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3d009fe Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild