$ git clone -n https://src.fedoraproject.org/rpms/rust-vm-superio.git /var/lib/mock/f40-build-2040651-48371/root/chroot_tmpdir/scmroot/rust-vm-superio
Cloning into '/var/lib/mock/f40-build-2040651-48371/root/chroot_tmpdir/scmroot/rust-vm-superio'...
$ git fetch origin b4f81ced662ab80e997b687a95d56152263d3fba:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-vm-superio
 * [new ref]         b4f81ced662ab80e997b687a95d56152263d3fba -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4f81ce Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild