$ git clone -n https://src.fedoraproject.org/rpms/perl-Net-Google-AuthSub.git /var/lib/mock/f40-build-2229585-53162/root/chroot_tmpdir/scmroot/perl-Net-Google-AuthSub
Cloning into '/var/lib/mock/f40-build-2229585-53162/root/chroot_tmpdir/scmroot/perl-Net-Google-AuthSub'...
$ git fetch origin 54e2fcf04d814b08a32a02bbaca3ac69c445839a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Net-Google-AuthSub
 * [new ref]         54e2fcf04d814b08a32a02bbaca3ac69c445839a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 54e2fcf Orphaned for 6+ weeks