ARROW-18374: [Go][CI][Benchmarking] Fix Go benchmark github info (apa…

…che#14691)

This PR fixes the Go benchmark script to work with recent `benchadapt` changes.

Authored-by: Austin Dickey <[email protected]>
Signed-off-by: Matt Topol <[email protected]>

ci/scripts/go_bench_adapt.py

@@ -79,7 +79,11 @@ def _transform_results(self) -> List[BenchmarkResult]:
                         "params": '/'.join(pieces[1:]),
                     },
                     run_reason=RUN_REASON,
-                    github=None, # scrape info from cloned repo
+                    github={
+                        "repository": os.environ["GITHUB_REPOSITORY"],
+                        "commit": os.environ["GITHUB_SHA"],
+                        "pr_number": None,  # we currently only run this on the default branch
+                    },
                 )
                 parsed.run_name = f"{parsed.run_reason}: {parsed.github['commit']}"
                 parsed_results.append(parsed)
@@ -89,4 +93,4 @@ def _transform_results(self) -> List[BenchmarkResult]:
 
 if __name__ == "__main__":
     go_adapter = GoAdapter(result_fields_override={"info":{}})
-    go_adapter()
+    go_adapter()