$ git clone -n https://src.fedoraproject.org/rpms/OpenImageIO.git /var/lib/mock/f42-build-3421936-45166/root/chroot_tmpdir/scmroot/OpenImageIO
Cloning into '/var/lib/mock/f42-build-3421936-45166/root/chroot_tmpdir/scmroot/OpenImageIO'...
$ git fetch origin 9d87450efafc9c31321d975e4f7a42cbe6989f1d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/OpenImageIO
 * [new ref]         9d87450efafc9c31321d975e4f7a42cbe6989f1d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9d87450 chore: rebuild for dcmtk 3.6.9