$ git clone -n https://src.fedoraproject.org/rpms/vokoscreenNG.git /var/lib/mock/f42-build-3419630-45162/root/chroot_tmpdir/scmroot/vokoscreenNG
Cloning into '/var/lib/mock/f42-build-3419630-45162/root/chroot_tmpdir/scmroot/vokoscreenNG'...
$ git fetch origin 817f6938ae9aee115f3401b508412c6ef24e38af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vokoscreenNG
 * [new ref]         817f6938ae9aee115f3401b508412c6ef24e38af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 817f693 Update to 4.4.6 upstream release