$ git clone -n https://src.fedoraproject.org/rpms/OpenImageIO.git /var/lib/mock/f40-build-757510-119383/root/chroot_tmpdir/scmroot/OpenImageIO
Cloning into '/var/lib/mock/f40-build-757510-119383/root/chroot_tmpdir/scmroot/OpenImageIO'...
$ git fetch origin c7236d47ad9d1e8f211791801582593a21029caf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/OpenImageIO
 * [new ref]         c7236d47ad9d1e8f211791801582593a21029caf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7236d4 Update to 2.4.17.0.