I come, hat in hand, with a bug-fix for a bug that I wrote. I just happened to discover this issue while playing around with turning the commit-graph on by default and stumbled into this warning. Please see the commit message for full details, but putting octopus merges in a tip commit-graph file in the incremental format [1] would cause the file to not load because Git thinks the base commit-graphs do not have the right hashes. It is very likely that a more careful patch would allow this warning to become an error during git commit-graph verify, but I wanted to minimize the change for this quick bug fix. Thanks, -Stolee [1] https://public-inbox.org/git/pull.184.v6.git.gitgitgadget@xxxxxxxxx/ Derrick Stolee (1): commit-graph: fix bug around octopus merges commit-graph.c | 2 +- t/t5324-split-commit-graph.sh | 4 +++- 2 files changed, 4 insertions(+), 2 deletions(-) base-commit: 5b15eb397d176c557a82e872d6b4043aa7589874 Published-As: https://github.com/gitgitgadget/git/releases/tag/pr-308%2Fderrickstolee%2Fcommit-graph-octopus-bug-v1 Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-308/derrickstolee/commit-graph-octopus-bug-v1 Pull-Request: https://github.com/gitgitgadget/git/pull/308 -- gitgitgadget