$ git clone -n https://src.fedoraproject.org/rpms/libmaxminddb.git /var/lib/mock/f40-build-2294606-56282/root/chroot_tmpdir/scmroot/libmaxminddb
Cloning into '/var/lib/mock/f40-build-2294606-56282/root/chroot_tmpdir/scmroot/libmaxminddb'...
$ git fetch origin f54347ae4da10d4a2a15cfa51d22a2b3dc31a9de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmaxminddb
 * [new ref]         f54347ae4da10d4a2a15cfa51d22a2b3dc31a9de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f54347a Upgrade to 1.9.1 (#2257602)