diff --git a/backend/src/api/public/v1/akrites-external/openapi.yaml b/backend/src/api/public/v1/akrites-external/openapi.yaml
index 7a7aec93ee..347cc647b0 100644
--- a/backend/src/api/public/v1/akrites-external/openapi.yaml
+++ b/backend/src/api/public/v1/akrites-external/openapi.yaml
@@ -976,6 +976,10 @@ components:
           enum: [failed]
         reason:
           type: string
+          description: >
+            Why the job failed. Inferred-repo jobs whose result has left
+            Temporal retention answer "Job result expired, resubmit the job";
+            a new submission for the same purl is then accepted.
           example: Repository not found on GitHub
 
     MemberContributorsJobUnresolvable:
diff --git a/backend/src/api/public/v1/packages/memberContributorCollectionPaths.test.ts b/backend/src/api/public/v1/packages/memberContributorCollectionPaths.test.ts
index 194599eb9a..179c7cd836 100644
--- a/backend/src/api/public/v1/packages/memberContributorCollectionPaths.test.ts
+++ b/backend/src/api/public/v1/packages/memberContributorCollectionPaths.test.ts
@@ -5,6 +5,7 @@ import {
   collectionPathForPurlType,
   isWellFormedPurl,
   purlType,
+  canonicalizePurlType,
 } from './memberContributorCollectionPaths'
 
 describe('purlType', () => {
@@ -21,6 +22,16 @@ describe('purlType', () => {
   })
 })
 
+describe('canonicalizePurlType', () => {
+  it.each([
+    ['pkg:Hackage/aeson', 'pkg:hackage/aeson'],
+    ['pkg:hackage/Aeson', 'pkg:hackage/Aeson'],
+    ['pkg:npm/%40Babel/core', 'pkg:npm/%40Babel/core'],
+  ])('canonicalizes %s to %s', (purl, expected) => {
+    expect(canonicalizePurlType(purl)).toBe(expected)
+  })
+})
+
 describe('collectionPathForPurlType', () => {
   it('maps every collected purl type to the github path', () => {
     for (const type of ['npm', 'maven', 'pypi', 'cargo', 'golang', 'nuget', 'composer', 'gem']) {
diff --git a/backend/src/api/public/v1/packages/memberContributorCollectionPaths.ts b/backend/src/api/public/v1/packages/memberContributorCollectionPaths.ts
index 0ec826d758..13eae8a471 100644
--- a/backend/src/api/public/v1/packages/memberContributorCollectionPaths.ts
+++ b/backend/src/api/public/v1/packages/memberContributorCollectionPaths.ts
@@ -19,6 +19,17 @@ export function purlType(purl: string): string {
   return type.toLowerCase()
 }
 
+export function canonicalizePurlType(purl: string): string {
+  const schemeLength = 'pkg:'.length
+  const slash = purl.indexOf('/', schemeLength)
+  const typeEnd = slash === -1 ? purl.length : slash
+  return (
+    purl.slice(0, schemeLength) +
+    purl.slice(schemeLength, typeEnd).toLowerCase() +
+    purl.slice(typeEnd)
+  )
+}
+
 const WELL_FORMED_PURL = /^pkg:[a-z][a-z0-9.+-]*\/[^/?#]+/i
 
 function isDecodable(value: string): boolean {
diff --git a/backend/src/api/public/v1/packages/submitMemberContributorsJob.test.ts b/backend/src/api/public/v1/packages/submitMemberContributorsJob.test.ts
index b893143258..4815cfe252 100644
--- a/backend/src/api/public/v1/packages/submitMemberContributorsJob.test.ts
+++ b/backend/src/api/public/v1/packages/submitMemberContributorsJob.test.ts
@@ -392,11 +392,15 @@ describe('submitMemberContributorsJob, unknown ecosystem', () => {
 
   it.each(['pkg:hackage/aeson', 'pkg:Hackage/aeson'])(
     'creates an llm repo resolution job for %s without a package lookup and starts the inferred-repo workflow',
-    async (purl) => {
-      const { req, res, status, json } = mockReqRes({ purl })
+    async (requestedPurl) => {
+      const purl = 'pkg:hackage/aeson'
+      const { req, res, status, json } = mockReqRes({ purl: requestedPurl })
 
       await submitMemberContributorsJob(req, res)
 
+      expect(findActiveMemberContributorJobByPurl.mock.calls).toEqual([[{}, purl]])
+      expect(findLatestMemberContributorJobByPurl.mock.calls).toEqual([[{}, purl]])
+
       const [, input] = createMemberContributorJob.mock.calls[0]
       expect(createMemberContributorJob.mock.calls).toEqual([
         [
diff --git a/backend/src/api/public/v1/packages/submitMemberContributorsJob.ts b/backend/src/api/public/v1/packages/submitMemberContributorsJob.ts
index d937b630c5..35d4d49591 100644
--- a/backend/src/api/public/v1/packages/submitMemberContributorsJob.ts
+++ b/backend/src/api/public/v1/packages/submitMemberContributorsJob.ts
@@ -26,6 +26,7 @@ import {
 
 import {
   LLM_REPO_RESOLUTION_PATH,
+  canonicalizePurlType,
   collectionPathForPurlType,
   isWellFormedPurl,
   purlType,
@@ -179,13 +180,14 @@ async function respondWithActiveJob(
 
 async function submitInferredRepoJob(
   qx: QueryExecutor,
-  purl: string,
+  requestedPurl: string,
   ecosystem: string,
   res: Response,
 ): Promise<void> {
-  if (!isWellFormedPurl(purl)) {
+  if (!isWellFormedPurl(requestedPurl)) {
     throw new BadRequestError('Malformed purl')
   }
+  const purl = canonicalizePurlType(requestedPurl)
   const active = await findActiveMemberContributorJobByPurl(qx, purl)
   if (active) {
     await respondWithActiveJob(qx, active.id, MEMBER_CONTRIBUTORS_INFERRED_REPO_WORKFLOW, res)