no-commit-to-branch fails during rebase

[mdekstrand]

The no-commit-to-branch hook does not seem to work with commits in the middle of an interactive rebase - it cannot find the current branch while e.g. rewording a commit in an interactive rebase. I consistently get the following error when trying to reword a commit in interactive rebase:

commit-branch stderr:
Error: Failed to get current git branch

Location:
    src/cli/util/no_commit_to_branch.rs:39:78

I have updated to hk 1.51 and the issue persists.

[jdx]

Thanks for the report. I confirmed that an interactive rebase detaches HEAD and that hk was treating the resulting git symbolic-ref exit status as a fatal branch-detection error.

This is fixed in #1075. The change treats the detached-HEAD status as not being on a protected branch while preserving errors for genuine Git failures, and adds regression coverage for the rebase state.

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