$ git clone -n https://src.fedoraproject.org/rpms/php-maxminddb.git /var/lib/mock/f41-build-808525-145919/root/chroot_tmpdir/scmroot/php-maxminddb
Cloning into '/var/lib/mock/f41-build-808525-145919/root/chroot_tmpdir/scmroot/php-maxminddb'...
$ git fetch origin b2f37c6394228cd08da7b8096e443e6f54d0ddaa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/php-maxminddb
 * [new ref]         b2f37c6394228cd08da7b8096e443e6f54d0ddaa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b2f37c6 drop 32-bit support