$ git clone -n https://src.fedoraproject.org/rpms/rust-below-model.git /var/lib/mock/f40-build-2624817-65118/root/chroot_tmpdir/scmroot/rust-below-model
Cloning into '/var/lib/mock/f40-build-2624817-65118/root/chroot_tmpdir/scmroot/rust-below-model'...
$ git fetch origin 3b54f45f59a20868e88b07869278498ddc988d64:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-below-model
 * [new ref]         3b54f45f59a20868e88b07869278498ddc988d64 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b54f45 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild