$ git clone -n https://src.fedoraproject.org/rpms/ModemManager.git /var/lib/mock/f31-build-75913-31347/root/chroot_tmpdir/scmroot/ModemManager
Cloning into '/var/lib/mock/f31-build-75913-31347/root/chroot_tmpdir/scmroot/ModemManager'...
$ git reset --hard 6d4795868f57e57d5999abb2c554b34b2f609102
HEAD is now at 6d47958 - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild