$ git clone -n https://src.fedoraproject.org/rpms/libmemcached-awesome.git /var/lib/mock/f45-build-16542-487/root/chroot_tmpdir/scmroot/libmemcached-awesome
Cloning into '/var/lib/mock/f45-build-16542-487/root/chroot_tmpdir/scmroot/libmemcached-awesome'...
$ git fetch origin 2a06ed16b119ec4a870468610457b865cc252540:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libmemcached-awesome
 * [new ref]         2a06ed16b119ec4a870468610457b865cc252540 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2a06ed1 fix FTBFS #2504281