$ git clone -n https://src.fedoraproject.org/rpms/rust-enumn.git /var/lib/mock/f45-build-41488-782/root/chroot_tmpdir/scmroot/rust-enumn
Cloning into '/var/lib/mock/f45-build-41488-782/root/chroot_tmpdir/scmroot/rust-enumn'...
$ git fetch origin b8682285116002b97a90d18519bb23475e13d9aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-enumn
 * [new ref]         b8682285116002b97a90d18519bb23475e13d9aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b868228 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild