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git bisect --first-parent bisects only the straight line of first parents of merge commits. If you --no-ff PRs and always have merge commits, it is essentially
by WorldMaker 4y ago
git bisect --first-parent bisects only the straight line of first parents of merge commits. If you --no-ff PRs and always have merge commits, it is essentially a bisect at the PR level without any need to squash the graph.