RFR: pr: update all local branches for commit comments

[Robin Westberg]

On Sun, 28 Feb 2021 20:05:22 GMT, Erik Helin <ehelin at openjdk.org> wrote:

> Hi all,
> 
> please review this patch that makes `CommitCommentsWorkItem` properly update all local branches prior to calling `ReadOnlyRepository.commitMetdata`. `ReadOnlyRepository.commitMetadata` is essentially `rev-list —all` for Git and all local refs need to be updated for this to work. In order to make as few networks call as possible I manually merge each local branch with its remote counterpart (instead of doing `pull`).
> 
> Testing:
> - [x] `make test` passes on Linux x64
> 
> Thanks,
> Erik

bots/pr/src/main/java/org/openjdk/skara/bots/pr/CommitCommentsWorkItem.java line 70:

> 68:             var localRepoPath = scratchPath.resolve("pr").resolve("commit-comments").resolve(bot.repo().name());
> 69:             var localRepo = hostedRepositoryPool.materialize(bot.repo(), localRepoPath);
> 70:             localRepo.fetchAllRemotes(false);

Not sure this is needed? The materialize call should have done a fetchAll as well..

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PR: https://git.openjdk.java.net/skara/pull/1041