$ git clone -n https://src.fedoraproject.org/rpms/mathex.git /var/lib/mock/f40-build-795374-140110/root/chroot_tmpdir/scmroot/mathex
Cloning into '/var/lib/mock/f40-build-795374-140110/root/chroot_tmpdir/scmroot/mathex'...
$ git fetch origin 3f4f5d0f4fd205bce67aa6c9886dcdb0e614da32:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mathex
 * [new ref]         3f4f5d0f4fd205bce67aa6c9886dcdb0e614da32 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3f4f5d0 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild