$ git clone -n https://src.fedoraproject.org/rpms/embree3.git /var/lib/mock/f40-build-2362265-60364/root/chroot_tmpdir/scmroot/embree3
Cloning into '/var/lib/mock/f40-build-2362265-60364/root/chroot_tmpdir/scmroot/embree3'...
$ git fetch origin 81be1990ff257a87e05e0e261aed419a536aca2f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/embree3
 * [new ref]         81be1990ff257a87e05e0e261aed419a536aca2f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 81be199 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild