$ git clone -n https://src.fedoraproject.org/rpms/fio.git /var/lib/mock/f40-build-2209383-52153/root/chroot_tmpdir/scmroot/fio
Cloning into '/var/lib/mock/f40-build-2209383-52153/root/chroot_tmpdir/scmroot/fio'...
$ git fetch origin 947938af65b1513d816b38dfcaf7b80d5caf0bf2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fio
 * [new ref]         947938af65b1513d816b38dfcaf7b80d5caf0bf2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 947938a Rebase to upstream version 3.36