$ git clone -n https://src.fedoraproject.org/rpms/libcdr.git /var/lib/mock/f31-build-68163-30161/root/chroot_tmpdir/scmroot/libcdr
Cloning into '/var/lib/mock/f31-build-68163-30161/root/chroot_tmpdir/scmroot/libcdr'...
$ git reset --hard b1b47f7f927c602257c850ab3d3ab688779e3ee1
HEAD is now at b1b47f7 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild