ci: tolerate checkout line-ending normalization

.gitea/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
     # The temporary release runner is isolated from stale queued jobs that use
     # the old ubuntu-24.04 label. Restore ubuntu-latest after this release when
     # the repository's normal Linux runner is online again.
-    runs-on: kaidi-release:host
+    runs-on: kaidi-release
     steps:
       - uses: actions/checkout@v4
         with:
@@ -24,11 +24,17 @@ jobs:
         run: |
           GITEA_REF_NAME=${GITHUB_REF_NAME:-}
           if [ -z "$GITEA_REF_NAME" ]; then GITEA_REF_NAME=${GITHUB_REF#refs/tags/}; fi
+          if [ -z "$GITEA_REF_NAME" ] || [ "$GITEA_REF_NAME" = "$GITHUB_REF" ]; then
+            GITEA_REF_NAME=$(git tag --points-at HEAD | awk '/^v[0-9A-Za-z][0-9A-Za-z._+-]*$/{print; exit}')
+          fi
           VERSION=${GITEA_REF_NAME#v}
           test "$GITEA_REF_NAME" = "v$VERSION"
           ./scripts/check-semver.sh "$VERSION"
-          GITEA_SHA=$(git rev-parse "refs/tags/$GITEA_REF_NAME^{commit}")
-          test -z "$(git status --porcelain --untracked-files=all)"
+          GITEA_SHA=$(git rev-parse HEAD)
+          test "$(git rev-parse "refs/tags/$GITEA_REF_NAME^{commit}")" = "$GITEA_SHA"
+          test -z "$(git ls-files --others --exclude-standard)"
+          git diff --quiet --ignore-space-at-eol --ignore-cr-at-eol \
+            || { printf 'Release checkout has non-whitespace tracked changes:\n' >&2; git diff --stat >&2; exit 1; }
           {
             printf 'version=%s\n' "$VERSION"
             printf 'ref=%s\n' "$GITEA_REF_NAME"