$ git clone -n https://src.fedoraproject.org/rpms/lua-fifo.git /var/lib/mock/f45-build-17652-502/root/chroot_tmpdir/scmroot/lua-fifo
Cloning into '/var/lib/mock/f45-build-17652-502/root/chroot_tmpdir/scmroot/lua-fifo'...
$ git fetch origin e7cb236c48bf5bb8c16f3d2bc91ea7e43934f6ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lua-fifo
 * [new ref]         e7cb236c48bf5bb8c16f3d2bc91ea7e43934f6ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e7cb236 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild