$ git clone -n https://src.fedoraproject.org/rpms/libdvdnav.git /var/lib/mock/f31-build-68492-30189/root/chroot_tmpdir/scmroot/libdvdnav
Cloning into '/var/lib/mock/f31-build-68492-30189/root/chroot_tmpdir/scmroot/libdvdnav'...
$ git reset --hard 9ddf17340562524eebec165b20c3db43d593557f
HEAD is now at 9ddf173 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild