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Fix tag available check to refuse prefix matching #82

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Merged
wagoodman merged 1 commit into from
May 4, 2026
Merged

Fix tag available check to refuse prefix matching #82

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9 changes: 6 additions & 3 deletions .github/workflows/check-version-available.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -64,11 +64,14 @@ jobs:
- name: Check if tag already exists
env:
VERSION: ${{ inputs.version }}
REPO: ${{ github.repository }}
GH_TOKEN: ${{ github.token }}
run: |
# use GitHub API to check if tag exists (more reliable than git ls-remote)
HTTP_STATUS=$(gh api "repos/${{ github.repository }}/git/refs/tags/${VERSION}" \
-i 2>&1 | head -1 | awk '{print $2}' || echo "000")
# use the singular `git/ref/tags/<name>` endpoint for an exact-match
# lookup. The plural `git/refs/tags/<name>` endpoint does prefix
# matching and would return 200 for e.g. v0.1.0 if v0.1.0-rc1 exists.
HTTP_STATUS=$(gh api "repos/${REPO}/git/ref/tags/${VERSION}" --silent -i 2>/dev/null | head -1 | awk '{print $2}')
HTTP_STATUS="${HTTP_STATUS:-000}"

if [[ "${HTTP_STATUS}" == "200" ]]; then
echo "::error::tag '${VERSION}' already exists"
Expand Down