$ git clone -n https://src.fedoraproject.org/rpms/rust-nalgebra0.33.git /var/lib/mock/f45-build-43297-801/root/chroot_tmpdir/scmroot/rust-nalgebra0.33
Cloning into '/var/lib/mock/f45-build-43297-801/root/chroot_tmpdir/scmroot/rust-nalgebra0.33'...
$ git fetch origin 4d049ba01a3a51acf5be3206d8426a39daadc2ec:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-nalgebra0.33
 * [new ref]         4d049ba01a3a51acf5be3206d8426a39daadc2ec -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d049ba Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild