$ git clone -n https://src.fedoraproject.org/rpms/mbuffer.git /var/lib/mock/f31-build-86506-31688/root/chroot_tmpdir/scmroot/mbuffer
Cloning into '/var/lib/mock/f31-build-86506-31688/root/chroot_tmpdir/scmroot/mbuffer'...
$ git reset --hard 05d7c2da0474bec123039f973e5e8f2e8cd23e0b
HEAD is now at 05d7c2d - Rebuilt for https://fedoraproject.org/wiki/Fedora_31_Mass_Rebuild