From 7946ceb19e3e54550fbb7606f00b8bf5e9031c18 Mon Sep 17 00:00:00 2001
From: Predrag Gruevski <obi1kenobi82@gmail.com>
Date: Tue, 2 Aug 2022 11:41:19 -0700
Subject: [PATCH] Explicitly fetch the comparison tag.

---
 action.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/action.yml b/action.yml
index 0a4c23b..db6752f 100644
--- a/action.yml
+++ b/action.yml
@@ -40,7 +40,9 @@ runs:
         # We *do not* want to record and reuse the target directory path
         # across different git commits, since it may be at a different location
         # in different commits.
-        git checkout "${{ inputs.version-tag-prefix }}$("$GITHUB_ACTION_PATH/find_comparison_version.sh" "$PACKAGE_NAME")"
+        export COMPARISON_TAG="${{ inputs.version-tag-prefix }}$("$GITHUB_ACTION_PATH/find_comparison_version.sh" "$PACKAGE_NAME")"
+        git fetch "$COMPARISON_TAG"
+        git checkout "$COMPARISON_TAG"
         cargo +nightly rustdoc -- -Zunstable-options --output-format json
         mv "$(cargo metadata --format-version 1 | jq -r .target_directory)/doc/$PACKAGE_NAME_WITH_UNDERSCORES.json" /tmp/baseline.json