$ git clone -n https://src.fedoraproject.org/rpms/rust-statistical.git /var/lib/mock/f45-build-45122-821/root/chroot_tmpdir/scmroot/rust-statistical
Cloning into '/var/lib/mock/f45-build-45122-821/root/chroot_tmpdir/scmroot/rust-statistical'...
$ git fetch origin 6df37d96293601f01f9c5c647680475bfd689327:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-statistical
 * [new ref]         6df37d96293601f01f9c5c647680475bfd689327 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6df37d9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild