$ git clone -n https://src.fedoraproject.org/rpms/rust-rkyv.git /var/lib/mock/f40-build-2657873-66917/root/chroot_tmpdir/scmroot/rust-rkyv
Cloning into '/var/lib/mock/f40-build-2657873-66917/root/chroot_tmpdir/scmroot/rust-rkyv'...
$ git fetch origin d7b0f149053d98ebe2fd329635cec00bac3da4ea:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rkyv
 * [new ref]         d7b0f149053d98ebe2fd329635cec00bac3da4ea -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d7b0f14 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild