$ git clone -n https://src.fedoraproject.org/rpms/embree3.git /var/lib/mock/f40-build-2272085-54905/root/chroot_tmpdir/scmroot/embree3
Cloning into '/var/lib/mock/f40-build-2272085-54905/root/chroot_tmpdir/scmroot/embree3'...
$ git fetch origin b6dd47c26f00f7d2768b82259938ef32d7caa4ee:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/embree3
 * [new ref]         b6dd47c26f00f7d2768b82259938ef32d7caa4ee -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6dd47c Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild