$ git clone -n https://src.fedoraproject.org/rpms/rust-rusb.git /var/lib/mock/f45-build-44524-814/root/chroot_tmpdir/scmroot/rust-rusb
Cloning into '/var/lib/mock/f45-build-44524-814/root/chroot_tmpdir/scmroot/rust-rusb'...
$ git fetch origin e4fa56369f0a4a0a0ee3b5f530eeee67c85a890d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rusb
 * [new ref]         e4fa56369f0a4a0a0ee3b5f530eeee67c85a890d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4fa563 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild