$ git clone -n https://src.fedoraproject.org/rpms/lua-ldap.git /var/lib/mock/f40-build-2009541-45492/root/chroot_tmpdir/scmroot/lua-ldap
Cloning into '/var/lib/mock/f40-build-2009541-45492/root/chroot_tmpdir/scmroot/lua-ldap'...
$ git fetch origin 5b0c623bb687cc11db51ddbad6a5129018c4df3c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/lua-ldap
 * [new ref]         5b0c623bb687cc11db51ddbad6a5129018c4df3c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5b0c623 Disable C89 support to match the lua runtime (required on i686)