$ git clone -n https://src.fedoraproject.org/rpms/libva-nvidia-driver.git /var/lib/mock/f40-build-2008678-45398/root/chroot_tmpdir/scmroot/libva-nvidia-driver
Cloning into '/var/lib/mock/f40-build-2008678-45398/root/chroot_tmpdir/scmroot/libva-nvidia-driver'...
$ git fetch origin f40fef3f0e4eaba4c70462b5adc722b0c8458754:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libva-nvidia-driver
 * [new ref]         f40fef3f0e4eaba4c70462b5adc722b0c8458754 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f40fef3 Update to 0.0.11