Merge pull request #1863 from meriadec/attest-provenance-tags

Handle tags containing "@" character in `buildSLSAProvenancePredicate`

src/provenance.ts

@@ -30,9 +30,11 @@ export const buildSLSAProvenancePredicate = async (
   // Split just the path and ref from the workflow string.
   // owner/repo/.github/workflows/main.yml@main =>
   //   .github/workflows/main.yml, main
-  const [workflowPath, workflowRef] = claims.workflow_ref
+  const [workflowPath, ...workflowRefChunks] = claims.workflow_ref
     .replace(`${claims.repository}/`, '')
     .split('@')
+  // Handle case where tag contains `@` (e.g: when using changesets in a monorepo context),
+  const workflowRef = workflowRefChunks.join('@')
 
   return {
     type: SLSA_PREDICATE_V1_TYPE,