$ git clone -n https://src.fedoraproject.org/rpms/OpenImageIO.git /var/lib/mock/f39-build-1585513-38146/root/chroot_tmpdir/scmroot/OpenImageIO
Cloning into '/var/lib/mock/f39-build-1585513-38146/root/chroot_tmpdir/scmroot/OpenImageIO'...
$ git fetch origin 42d79e5fd71242c0de77285cb02071f374b5e921:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/OpenImageIO
 * [new ref]         42d79e5fd71242c0de77285cb02071f374b5e921 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 42d79e5 Update to 2.4.16.0.