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Address the base repository in PR/MR-reading commands when base config keys are set - #1748

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fix/read-prs-from-base-repo
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Address the base repository in PR/MR-reading commands when base config keys are set#1748
PawelLipski wants to merge 3 commits into
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fix/read-prs-from-base-repo

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_init_code_hosting_client always resolved the code-hosting client from the head remote, so the PR/MR-reading and -modifying commands (anno-prs, checkout-prs, retarget-pr, restack-pr, update-pr-descriptions and their GitLab counterparts) ignored the machete.{github,gitlab}.base* config keys, which until now only affected create-{pr,mr}.
In a fork workflow (head = fork, base = upstream) those commands therefore queried the fork - where the PRs/MRs don't live - and found nothing.
The client is now created against the base repository whenever any base* key is set, while the returned head remote is kept for fetching/pushing branches; when no base* key is set the base repository resolves to the head one, so this is a no-op for the common non-fork case, and create-{pr,mr}'s stricter base resolution is left untouched.

@PawelLipski PawelLipski self-assigned this Jul 8, 2026
@PawelLipski PawelLipski added bug Something isn't working github Relates to integration with GitHub gitlab Relates to integration with GitLab labels Jul 8, 2026
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Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.75%. Comparing base (12eb29b) to head (f4bbfe4).

Additional details and impacted files
@@           Coverage Diff            @@
##           develop    #1748   +/-   ##
========================================
  Coverage    98.75%   98.75%           
========================================
  Files           45       45           
  Lines         5379     5389   +10     
  Branches       980      982    +2     
========================================
+ Hits          5312     5322   +10     
  Misses          41       41           
  Partials        26       26           

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In a fork workflow the PR/MR is hosted by the base (upstream) repository, not the head (fork) repository that holds the branches.
retarget-pr/restack-pr (and their GitLab retarget-mr/restack-mr counterparts) now resolve the code hosting client against the base repository
inferred from the parent branch's tracking remote - exactly like create-pr already does - so they query the repository that actually hosts the PR
even when no machete.{github,gitlab}.base* config keys are set.
Resolution is best-effort: if the base repository cannot be determined unambiguously and no base* keys are set, it falls back to the head repository,
preserving the previous behavior.
…g keys are set

`_init_code_hosting_client` always resolved the code-hosting client from the head remote, so the PR/MR-reading and -modifying commands (`anno-prs`, `checkout-prs`, `retarget-pr`, `restack-pr`, `update-pr-descriptions` and their GitLab counterparts) ignored the `machete.{github,gitlab}.base*` config keys, which until now only affected `create-{pr,mr}`.
In a fork workflow (head = fork, base = upstream) those commands therefore queried the fork - where the PRs/MRs don't live - and found nothing.
The client is now created against the base repository whenever any `base*` key is set, while the returned head remote is kept for fetching/pushing branches; when no `base*` key is set the base repository resolves to the head one, so this is a no-op for the common non-fork case, and `create-{pr,mr}`'s stricter base resolution is left untouched.
Document that the base* config keys are what make the PR/MR-reading and
-modifying commands (anno-prs, checkout-prs, retarget-pr, restack-pr,
update-pr-descriptions and their MR counterparts) address a base repository
that differs from the head one. Only create-pr/create-mr infers the base
repository/target project from the base branch's tracking remote, so it can
target a fork/upstream base even with no config; the other commands are
initialized without a base branch to infer from and therefore need the keys.
@PawelLipski
PawelLipski force-pushed the fix/read-prs-from-base-repo branch from 1a82807 to f4bbfe4 Compare July 28, 2026 15:34
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