The git subtree merge method is hard to export changes from.. https://github.com/apenwarr/git-subtree provides another method which appears to be easier to export changes from. Also as a no-change-exported method, see https://metacpan.org/module/git-stitch-repo which claims to generate a unified history instead of merged branches. By SethRobertson at 2011-12-16 04:25:47