$ git clone -n https://src.fedoraproject.org/rpms/libunwind.git /var/lib/mock/f31-build-59671-28619/root/chroot_tmpdir/scmroot/libunwind
Cloning into '/var/lib/mock/f31-build-59671-28619/root/chroot_tmpdir/scmroot/libunwind'...
$ git reset --hard d1c7cb2e271cda7b1c0482d273ae9f3a6af99a54
HEAD is now at d1c7cb2 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild