$ git clone -n https://src.fedoraproject.org/rpms/rust-ndarray-stats.git /var/lib/mock/f45-build-43337-802/root/chroot_tmpdir/scmroot/rust-ndarray-stats
Cloning into '/var/lib/mock/f45-build-43337-802/root/chroot_tmpdir/scmroot/rust-ndarray-stats'...
$ git fetch origin b45aff9a0273c0c71a65a08a69dc8029f1ed4d17:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ndarray-stats
 * [new ref]         b45aff9a0273c0c71a65a08a69dc8029f1ed4d17 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b45aff9 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild