$ git clone -n https://src.fedoraproject.org/rpms/scorched3d.git /var/lib/mock/f45-build-35680-698/root/chroot_tmpdir/scmroot/scorched3d
Cloning into '/var/lib/mock/f45-build-35680-698/root/chroot_tmpdir/scmroot/scorched3d'...
$ git fetch origin 46ea3d4d48b4f2809dca086409903344c2fbdf00:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/scorched3d
 * [new ref]         46ea3d4d48b4f2809dca086409903344c2fbdf00 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 46ea3d4 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild