$ git clone -n https://src.fedoraproject.org/rpms/lua-http.git /var/lib/mock/f45-build-17663-502/root/chroot_tmpdir/scmroot/lua-http
Cloning into '/var/lib/mock/f45-build-17663-502/root/chroot_tmpdir/scmroot/lua-http'...
$ git fetch origin 2cc328a98fb53f678890137b1801eadc03ffd055:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lua-http
 * [new ref]         2cc328a98fb53f678890137b1801eadc03ffd055 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2cc328a Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild