$ git clone -n https://src.fedoraproject.org/rpms/lua-ev.git /var/lib/mock/f45-build-17655-502/root/chroot_tmpdir/scmroot/lua-ev
Cloning into '/var/lib/mock/f45-build-17655-502/root/chroot_tmpdir/scmroot/lua-ev'...
$ git fetch origin 1615b977a63fdfd2c01678bb3cf0e588c97c432d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lua-ev
 * [new ref]         1615b977a63fdfd2c01678bb3cf0e588c97c432d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1615b97 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild