diff --git a/lib/workers/pr/__snapshots__/index.spec.ts.snap b/lib/workers/pr/__snapshots__/index.spec.ts.snap
index f53d740c73e674..4765f6e7d44d75 100644
--- a/lib/workers/pr/__snapshots__/index.spec.ts.snap
+++ b/lib/workers/pr/__snapshots__/index.spec.ts.snap
@@ -137,7 +137,7 @@ Array [
       "gitLabIgnoreApprovals": false,
       "usePlatformAutomerge": false,
     },
-    "prBody": "This PR contains the following updates:\\n\\n| Package | Type | Update | Change |\\n|---|---|---|---|\\n| [dummy](https://dummy.com) ([source](https://github.com/renovateapp/dummy), [changelog](https://github.com/renovateapp/dummy/changelog.md)) | devDependencies | lockFileMaintenance | \`1.0.0\` -> \`1.1.0\` |\\n| a |  |  | \`zzzzzz\` -> \`aaaaaaa\` |\\n| b |  | pin | \`some_old_value\` -> \`some_new_value\` |\\n| c |  |  | \`\` -> \`\` |\\n| d |  | lockFileMaintenance | \`\` -> \`\` |\\n| e |  | lockFileMaintenance | \`\` -> \`\` |\\n| f |  | lockFileMaintenance | \`\` -> \`\` |\\n\\nnote 1\\n\\nnote 2\\n\\n:warning: Release Notes retrieval for this PR were skipped because no github.com credentials were available.\\nIf you are self-hosted, please see [this instruction](https://github.com/renovatebot/renovate/blob/master/docs/usage/examples/self-hosting.md#githubcom-token-for-release-notes).\\n\\n🔡 If you wish to disable git hash updates, add \`\\":disableDigestUpdates\\"\` to the extends array in your config.\\n\\n🔧 This Pull Request updates lock files to use the latest dependency versions.\\n\\n---\\n\\n### Release Notes\\n\\n<details>\\n<summary>renovateapp/dummy (dummy)</summary>\\n\\n### [\`v1.1.0\`](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n[Compare Source](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n</details>\\n\\n<details>\\n<summary>renovateapp/dummy (b)</summary>\\n\\n### [\`v1.1.0\`](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n[Compare Source](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n</details>\\n\\n<details>\\n<summary>renovateapp/dummymonorepo</summary>\\n\\n### [\`v1.1.0\`](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n[Compare Source](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n</details>\\n\\n---\\n\\n### Configuration\\n\\n📅 **Schedule**: At any time (no schedule defined).\\n\\n🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.\\n\\n♻ **Rebasing**: Never, or you tick the rebase/retry checkbox.\\n\\n👻 **Immortal**: This PR will be recreated if closed unmerged. Get [config help](https://github.com/renovatebot/renovate/discussions) if that's undesired.\\n\\n---\\n\\n - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox.\\n\\n---\\n\\nThis PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).",
+    "prBody": "This PR contains the following updates:\\n\\n| Package | Type | Update | Change |\\n|---|---|---|---|\\n| [dummy](https://dummy.com) ([source](https://github.com/renovateapp/dummy), [changelog](https://github.com/renovateapp/dummy/changelog.md)) | devDependencies | lockFileMaintenance | \`1.0.0\` -> \`1.1.0\` |\\n| a |  |  | \`zzzzzz\` -> \`aaaaaaa\` |\\n| b |  | pin | \`some_old_value\` -> \`some_new_value\` |\\n| c |  |  | \`\` -> \`\` |\\n| d |  | lockFileMaintenance | \`\` -> \`\` |\\n| e |  | lockFileMaintenance | \`\` -> \`\` |\\n| f |  | lockFileMaintenance | \`\` -> \`\` |\\n| g |  | lockFileMaintenance | \`\` -> \`\` |\\n| h |  | lockFileMaintenance | \`\` -> \`\` |\\n\\nnote 1\\n\\nnote 2\\n\\n:warning: Release Notes retrieval for this PR were skipped because no github.com credentials were available.\\nIf you are self-hosted, please see [this instruction](https://github.com/renovatebot/renovate/blob/master/docs/usage/examples/self-hosting.md#githubcom-token-for-release-notes).\\n\\n🔡 If you wish to disable git hash updates, add \`\\":disableDigestUpdates\\"\` to the extends array in your config.\\n\\n🔧 This Pull Request updates lock files to use the latest dependency versions.\\n\\n---\\n\\n### Release Notes\\n\\n<details>\\n<summary>renovateapp/dummy (dummy)</summary>\\n\\n### [\`v1.1.0\`](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n[Compare Source](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n</details>\\n\\n<details>\\n<summary>renovateapp/dummy (b)</summary>\\n\\n### [\`v1.1.0\`](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n[Compare Source](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n</details>\\n\\n<details>\\n<summary>renovateapp/dummymonorepo</summary>\\n\\n### [\`v1.1.0\`](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n[Compare Source](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n</details>\\n\\n<details>\\n<summary>renovateapp/anotherdummymonorepo (g)</summary>\\n\\n### [\`v1.1.0\`](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n[Compare Source](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n</details>\\n\\n<details>\\n<summary>renovateapp/anotherdummymonorepo (h)</summary>\\n\\n### [\`v1.1.0\`](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n[Compare Source](https://github.com/renovateapp/dummy/compare/v1.0.0...v1.1.0)\\n\\n</details>\\n\\n---\\n\\n### Configuration\\n\\n📅 **Schedule**: At any time (no schedule defined).\\n\\n🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.\\n\\n♻ **Rebasing**: Never, or you tick the rebase/retry checkbox.\\n\\n👻 **Immortal**: This PR will be recreated if closed unmerged. Get [config help](https://github.com/renovatebot/renovate/discussions) if that's undesired.\\n\\n---\\n\\n - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox.\\n\\n---\\n\\nThis PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).",
     "prTitle": "Update dependency dummy to v1.1.0",
     "sourceBranch": "renovate/dummy-1.x",
     "targetBranch": undefined,
diff --git a/lib/workers/pr/index.spec.ts b/lib/workers/pr/index.spec.ts
index 5915de3808f4ae..27efa86b931827 100644
--- a/lib/workers/pr/index.spec.ts
+++ b/lib/workers/pr/index.spec.ts
@@ -291,6 +291,7 @@ describe('workers/pr/index', () => {
     });
     it('should create group PR', async () => {
       const depsWithSameNotesSourceUrl = ['e', 'f'];
+      const depsWithSameSourceUrl = ['g', 'h'];
       config.upgrades = config.upgrades.concat([
         {
           depName: 'a',
@@ -324,6 +325,16 @@ describe('workers/pr/index', () => {
           updateType: 'lockFileMaintenance',
           prBodyNotes: ['{{#if foo}}'],
         },
+        {
+          depName: depsWithSameSourceUrl[0],
+          updateType: 'lockFileMaintenance',
+          prBodyNotes: ['{{#if foo}}'],
+        },
+        {
+          depName: depsWithSameSourceUrl[1],
+          updateType: 'lockFileMaintenance',
+          prBodyNotes: ['{{#if foo}}'],
+        },
       ] as never);
       config.updateType = 'lockFileMaintenance';
       config.recreateClosed = true;
@@ -352,6 +363,27 @@ describe('workers/pr/index', () => {
             }),
           };
         }
+
+        if (depsWithSameSourceUrl.includes(upgrade.depName)) {
+          upgrade.sourceDirectory = `packages/${upgrade.depName}`;
+
+          upgrade.logJSON = {
+            ...upgrade.logJSON,
+            project: {
+              ...upgrade.logJSON.project,
+              repository: 'renovateapp/anotherdummymonorepo',
+            },
+            versions: upgrade.logJSON.versions.map((V) => {
+              return {
+                ...V,
+                releaseNotes: {
+                  ...V.releaseNotes,
+                  notesSourceUrl: null,
+                },
+              };
+            }),
+          };
+        }
       }
       const { pr } = await prWorker.ensurePr(config);
       expect(pr).toMatchObject({ displayNumber: 'New Pull Request' });
diff --git a/lib/workers/pr/index.ts b/lib/workers/pr/index.ts
index b84edac6aea0a7..869dc1e0fb0312 100644
--- a/lib/workers/pr/index.ts
+++ b/lib/workers/pr/index.ts
@@ -328,8 +328,12 @@ export async function ensurePr(
 
   const releaseNotesSources: string[] = [];
   for (const upgrade of config.upgrades) {
-    const notesSourceUrl =
-      upgrade.releases?.[0]?.releaseNotes?.notesSourceUrl || upgrade.sourceUrl;
+    let notesSourceUrl = upgrade.releases?.[0]?.releaseNotes?.notesSourceUrl;
+    if (!notesSourceUrl) {
+      notesSourceUrl = `${upgrade.sourceUrl}${
+        upgrade.sourceDirectory ? `:${upgrade.sourceDirectory}` : ''
+      }`;
+    }
 
     if (upgrade.hasReleaseNotes && notesSourceUrl) {
       if (releaseNotesSources.includes(notesSourceUrl)) {