[llvm] [Github] Fix revisions in code format action reproducers (PR #155193)

[Aiden Grossman via llvm-commits]

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@@ -175,9 +181,32 @@ class ClangFormatHelper(FormatHelper):
     name = "clang-format"
     friendly_name = "C/C++ code formatter"
 
+    def _construct_command(self, diff_expression: list[str] | None):
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boomanaiden154 wrote:

Yeah, it's a bit weird and I'm not sure why the script special cases that. But this is just mirroring the existing code.

I remember some things like this being done for a reason though (maybe local testing or something, or for an earlier version of the script) and I don't want to remove things until I've done the git sleuthing and understand what's going on.

Either way, I think it's perfectly reasonable to leave for a follow up patch.

https://github.com/llvm/llvm-project/pull/155193