$ git clone -n https://src.fedoraproject.org/rpms/libsigc++.git /var/lib/mock/f33-build-293870-55204/root/chroot_tmpdir/scmroot/libsigc++
Cloning into '/var/lib/mock/f33-build-293870-55204/root/chroot_tmpdir/scmroot/libsigc++'...
$ git reset --hard 110cbbc0c29090d20ca3a19edeb6269102720c78
HEAD is now at 110cbbc - Second attempt - Rebuilt for https://fedoraproject.org/wiki/Fedora_33_Mass_Rebuild