$ git clone -n https://src.fedoraproject.org/rpms/libva-nvidia-driver.git /var/lib/mock/f45-build-17196-497/root/chroot_tmpdir/scmroot/libva-nvidia-driver
Cloning into '/var/lib/mock/f45-build-17196-497/root/chroot_tmpdir/scmroot/libva-nvidia-driver'...
$ git fetch origin 57ca1dbe83d99870fe753a2ee7da8ff9069108e3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libva-nvidia-driver
 * [new ref]         57ca1dbe83d99870fe753a2ee7da8ff9069108e3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57ca1db Update to 0.0.18