Hi Owen, To begin with, glad to meet you!
What an annoying problem. Here's what I could suggest: - Try 'git -xdf' to clean your repository entirely, removing any untracked or ignored files. If you're touching fonts, it may be that some build artifacts have to be removed (likewise, people often need such a procedure or a 'make doc-clean' for 'make doc' to succeed after changes in the documentation build system). Beware if you have important files (a dry run is advised, using -xdfn). - I'm puzzled on what to think of
Making mf/out/feta11.pfb < mf Copyright (c) 2000-2014 by George Williams. See AUTHORS for Contributors. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> with many parts BSD <http://fontforge.org/license.html>. Please read LICENSE. Based on sources from 20170812-ML-D. Based on source from git with hash:
On my system (Ubuntu 20.04), the last two lines read Version: 20190801 Based on sources from 03:10 UTC 6-Mar-2020-ML-D-GDK3. Perhaps your Fontforge is too old? Hope that helps! Jean