$ git clone -n https://src.fedoraproject.org/rpms/rust-lv2-core-derive.git /var/lib/mock/f45-build-43073-799/root/chroot_tmpdir/scmroot/rust-lv2-core-derive
Cloning into '/var/lib/mock/f45-build-43073-799/root/chroot_tmpdir/scmroot/rust-lv2-core-derive'...
$ git fetch origin b570a076182718cbb244824fec3b0fb00b91d44e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-lv2-core-derive
 * [new ref]         b570a076182718cbb244824fec3b0fb00b91d44e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b570a07 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild