$ git clone -n https://gitee.com/taijuanZZY/libunwind.git /var/lib/mock/dist-an23-build-208781-61846/root/chroot_tmpdir/scmroot/libunwind
Cloning into '/var/lib/mock/dist-an23-build-208781-61846/root/chroot_tmpdir/scmroot/libunwind'...
$ git reset --hard ff88bbbe79932cdf739aa8d77c917b50d11b8d83
HEAD is now at ff88bbb enable self-tests while building