$ git clone -n https://src.fedoraproject.org/rpms/libunwind.git /var/lib/mock/f31-build-116797-34581/root/chroot_tmpdir/scmroot/libunwind
Cloning into '/var/lib/mock/f31-build-116797-34581/root/chroot_tmpdir/scmroot/libunwind'...
$ git reset --hard ccdcb646ded69db5609f95b7c1da0a24cecb78dc
HEAD is now at ccdcb64 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild