$ git clone -n https://src.fedoraproject.org/rpms/libdvdnav.git /var/lib/mock/f31-build-58498-28457/root/chroot_tmpdir/scmroot/libdvdnav
Cloning into '/var/lib/mock/f31-build-58498-28457/root/chroot_tmpdir/scmroot/libdvdnav'...
$ git reset --hard 8c9d0dbdd3d6c1e7bc108cede194f6c1dabb7a4a
HEAD is now at 8c9d0db - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild