Show changes between commits

Show changes between commits in Git — with the four heights of help laid out: do it now, make it easier for the next person to accept, work out the right move when you are stuck, and learn the pattern so it stops coming back.

4prompt heights
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The four heights

The same task, four distances: today's deadline, the next reviewer, the stuck moment, the pattern.

Execute — do the immediate task

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I need to confirm what changed between commit 9f3c2b and 2a7e1d on branch hotfix/payment. Show a…
I need to confirm what changed between commit 9f3c2b and 2a7e1d on branch hotfix/payment. Show a unified diff of code and a file-level summary of added, removed, and modified files, and save the diff to diffs/payment-hotfix-9f3c2b-2a7e1d.patch.

Improve — make it easier to accept

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Before I send this diff to the payment engineer, make it easy to assess risk: produce a per-file…
Before I send this diff to the payment engineer, make it easy to assess risk: produce a per-file summary with function-level hunks, flag any changes to public APIs or DB schema, show which tests cover altered files, and annotate lines that remove error handling or change auth checks.

Decide — diagnose the stuck moment

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On hotfix/payment I have commits 9f3c2b (before) and 2a7e1d (after). I’m worried the regression…

A customer reported a regression after a hotfix; I need to see what changed between two commits.

On hotfix/payment I have commits 9f3c2b (before) and 2a7e1d (after). I’m worried the regression came from an underestimated change. What’s the fastest way to get a clear, file-by-file diff that highlights behavioral changes and potential API or security impacts so I can point the engineer to the suspicious hunks?

Become — change the pattern

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I spend too much time debugging regressions because I run diffs in panic and miss the risky…

I keep chasing regressions because diffs are hard to interpret under pressure.

I spend too much time debugging regressions because I run diffs in panic and miss the risky changes. What reproducible habit or small tooling setup can I adopt so diffs between commits surface likely causes quickly (API changes, removed checks, schema edits) and I can triage regressions in under twenty minutes?

Next to this one

Other version control work people do in Git.

Every task here came from the work, not from a feature list — which is why the prompts name what you want done and never the button that does it. The tool changes; the work does not.
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The rest of the map

Same library, five ways in.