$ git clone -n https://src.fedoraproject.org/rpms/libSM.git /var/lib/mock/f31-build-67740-30085/root/chroot_tmpdir/scmroot/libSM
Cloning into '/var/lib/mock/f31-build-67740-30085/root/chroot_tmpdir/scmroot/libSM'...
$ git reset --hard 2b1ba29f8c8b440bf4dced4a537e1ff04a3742bc
HEAD is now at 2b1ba29 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild