$ git clone -n https://src.fedoraproject.org/rpms/rust-route-recognizer.git /var/lib/mock/f45-build-44478-814/root/chroot_tmpdir/scmroot/rust-route-recognizer
Cloning into '/var/lib/mock/f45-build-44478-814/root/chroot_tmpdir/scmroot/rust-route-recognizer'...
$ git fetch origin 3ef460bc6e87bc80a74c104899d771761179bc20:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-route-recognizer
 * [new ref]         3ef460bc6e87bc80a74c104899d771761179bc20 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ef460b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild