$ git clone -n https://src.fedoraproject.org/rpms/cxxtools.git /var/lib/mock/f31-build-67419-30035/root/chroot_tmpdir/scmroot/cxxtools
Cloning into '/var/lib/mock/f31-build-67419-30035/root/chroot_tmpdir/scmroot/cxxtools'...
$ git reset --hard ec82c1077eec8fb77f153a3106530c10855934d6
HEAD is now at ec82c10 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild