diff --git a/client/src/components/apps/tabs/GitTab.jsx b/client/src/components/apps/tabs/GitTab.jsx
index 823818ce17..b818b8184f 100644
--- a/client/src/components/apps/tabs/GitTab.jsx
+++ b/client/src/components/apps/tabs/GitTab.jsx
@@ -159,6 +159,7 @@ export default function GitTab({ appId, appName, repoPath }) {
   const [cleanupConfirm, setCleanupConfirm] = useState(false);
   const [resetting, setResetting] = useState(false);
   const [resetConfirm, setResetConfirm] = useState(false);
+  const [sourceRefreshKey, setSourceRefreshKey] = useState(0);
 
   const loadGitData = useCallback(async (opts = {}) => {
     if (!repoPath) return;
@@ -253,6 +254,7 @@ export default function GitTab({ appId, appName, repoPath }) {
       toast.success(`Branches updated — ${parts.join(', ')}`);
     }
     await loadGitData({ includeRemote: true });
+    setSourceRefreshKey((key) => key + 1);
   };
 
   const handleReleasePR = async () => {
@@ -497,6 +499,7 @@ export default function GitTab({ appId, appName, repoPath }) {
       <RepositorySourcePanel
         appId={appId}
         appName={appName}
+        refreshKey={sourceRefreshKey}
         onUpdated={() => loadGitData({ includeRemote: true })}
       />
 
diff --git a/client/src/components/apps/tabs/GitTab.test.jsx b/client/src/components/apps/tabs/GitTab.test.jsx
index a3123020ab..32a83d4078 100644
--- a/client/src/components/apps/tabs/GitTab.test.jsx
+++ b/client/src/components/apps/tabs/GitTab.test.jsx
@@ -7,12 +7,15 @@ vi.mock('../../../services/api', () => ({
   getBranches: vi.fn(),
   getBranchComparison: vi.fn(),
   getRemoteBranches: vi.fn(),
+  updateBranches: vi.fn(),
   getGitDiff: vi.fn(),
   cleanupMergedBranches: vi.fn(),
   resetToDefaultBranch: vi.fn(),
 }));
 vi.mock('./RepositorySourcePanel', () => ({
-  default: ({ appId }) => <div data-testid="repository-source-panel">{appId}</div>,
+  default: ({ appId, refreshKey }) => (
+    <div data-testid="repository-source-panel" data-refresh-key={refreshKey}>{appId}</div>
+  ),
 }));
 
 import * as api from '../../../services/api';
@@ -38,6 +41,7 @@ beforeEach(() => {
   api.getBranches.mockResolvedValue({ branches: [] });
   api.getBranchComparison.mockResolvedValue(COMPARISON);
   api.getRemoteBranches.mockResolvedValue({ branches: [], defaultBranch: 'main' });
+  api.updateBranches.mockResolvedValue({ currentBranch: 'main', main: 'up to date' });
   api.getGitDiff.mockResolvedValue({ diff: '@@ -1 +1 @@\n-old\n+new' });
   api.cleanupMergedBranches.mockResolvedValue({ deleted: [], skipped: [] });
   api.resetToDefaultBranch.mockResolvedValue({ success: true, branch: 'main', previousBranch: 'main', previousHead: 'b'.repeat(40), head: 'a'.repeat(40), discardedFiles: 1, fetched: true });
@@ -71,6 +75,16 @@ describe('GitTab managed repository sources', () => {
     );
     expect(screen.getByTestId('repository-source-panel')).toHaveTextContent('app-other');
   });
+
+  it('refreshes repository sources after fetching branches', async () => {
+    render(<GitTab appId="app-example" appName="Example App" repoPath="/repo" />);
+
+    expect(await screen.findByTestId('repository-source-panel')).toHaveAttribute('data-refresh-key', '0');
+    fireEvent.click(screen.getByRole('button', { name: 'Fetch branches' }));
+
+    await waitFor(() => expect(api.updateBranches).toHaveBeenCalledWith('/repo'));
+    await waitFor(() => expect(screen.getByTestId('repository-source-panel')).toHaveAttribute('data-refresh-key', '1'));
+  });
 });
 
 describe('GitTab modal accessibility (issue #1090)', () => {
diff --git a/client/src/components/apps/tabs/RepositorySourcePanel.jsx b/client/src/components/apps/tabs/RepositorySourcePanel.jsx
index 8311a030df..772f4e4613 100644
--- a/client/src/components/apps/tabs/RepositorySourcePanel.jsx
+++ b/client/src/components/apps/tabs/RepositorySourcePanel.jsx
@@ -1,4 +1,4 @@
-import { useCallback, useEffect, useMemo, useState } from 'react';
+import { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import {
   AlertTriangle,
   CheckCircle2,
@@ -137,7 +137,7 @@ function RepositoryCard({ source }) {
   );
 }
 
-export default function RepositorySourcePanel({ appId, appName, onUpdated }) {
+export default function RepositorySourcePanel({ appId, appName, onUpdated, refreshKey = 0 }) {
   const [status, setStatus] = useState(null);
   const [loading, setLoading] = useState(true);
   const [refreshing, setRefreshing] = useState(false);
@@ -145,6 +145,7 @@ export default function RepositorySourcePanel({ appId, appName, onUpdated }) {
   const [updating, setUpdating] = useState(false);
   const [error, setError] = useState(null);
   const [updateIntent, setUpdateIntent] = useState(null);
+  const lastRefreshKey = useRef(refreshKey);
 
   const load = useCallback(async ({ initial = false } = {}) => {
     if (initial) setLoading(true);
@@ -164,6 +165,12 @@ export default function RepositorySourcePanel({ appId, appName, onUpdated }) {
     load({ initial: true });
   }, [load]);
 
+  useEffect(() => {
+    if (lastRefreshKey.current === refreshKey) return;
+    lastRefreshKey.current = refreshKey;
+    load();
+  }, [load, refreshKey]);
+
   const sources = status?.sources || [];
   const primary = sources.find((source) => source.id === 'primary') || sources[0] || null;
   const companions = sources.filter((source) => source !== primary);
@@ -212,9 +219,17 @@ export default function RepositorySourcePanel({ appId, appName, onUpdated }) {
       { syncFork: intent?.syncFork === true },
       { silent: true },
     ).catch((reason) => {
+      if (appId === api.PORTOS_APP_ID && status?.updateRestartsApp && !reason?.status) {
+        api.handleSelfRestart();
+        return { selfRestartTriggered: true };
+      }
       toast.error(reason.message || `Could not update ${appName || 'the app'}`);
       return null;
     });
+    if (result?.selfRestartTriggered) {
+      setUpdating(false);
+      return;
+    }
     if (result?.success) {
       toast.success(`${appName || 'App'} updated${status?.updateRestartsApp ? ' and restarted' : ''}`);
       await load();
diff --git a/client/src/components/apps/tabs/RepositorySourcePanel.test.jsx b/client/src/components/apps/tabs/RepositorySourcePanel.test.jsx
index e6c7e76f11..00cbf5f2ed 100644
--- a/client/src/components/apps/tabs/RepositorySourcePanel.test.jsx
+++ b/client/src/components/apps/tabs/RepositorySourcePanel.test.jsx
@@ -1,10 +1,12 @@
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
-import { cleanup, fireEvent, render, screen, waitFor } from '@testing-library/react';
+import { cleanup, fireEvent, render, screen, waitFor, within } from '@testing-library/react';
 
 vi.mock('../../../services/api', () => ({
+  PORTOS_APP_ID: 'portos-default',
   getAppRepositorySources: vi.fn(),
   syncAppRepositoryFork: vi.fn(),
   pullAndUpdateApp: vi.fn(),
+  handleSelfRestart: vi.fn(),
 }));
 
 import * as api from '../../../services/api';
@@ -157,6 +159,45 @@ describe('managed app repository sources', () => {
     await waitFor(() => expect(onUpdated).toHaveBeenCalledOnce());
   });
 
+  it('refreshes source status when the parent Git tab reports a branch update', async () => {
+    const currentStatus = canonicalStatus();
+    currentStatus.updateAvailable = false;
+    currentStatus.sources[0] = source({
+      id: 'primary',
+      label: 'Example App',
+      branch: 'main',
+      head: '3'.repeat(40),
+      origin: {
+        fullName: 'anima-research/example-app',
+        isUpstream: true,
+        isFork: false,
+      },
+    });
+    api.getAppRepositorySources
+      .mockResolvedValueOnce(canonicalStatus())
+      .mockResolvedValueOnce(currentStatus);
+
+    const { rerender } = render(
+      <RepositorySourcePanel appId="app-example" appName="Example App" refreshKey={0} />,
+    );
+    expect(await screen.findByText('Checkout 1 behind')).toBeInTheDocument();
+
+    rerender(<RepositorySourcePanel appId="app-example" appName="Example App" refreshKey={1} />);
+
+    await waitFor(() => expect(api.getAppRepositorySources).toHaveBeenCalledTimes(2));
+    await waitFor(() => expect(screen.getByTestId('repository-source-primary')).toHaveTextContent('Current'));
+  });
+
+  it('treats a PortOS update disconnect as the expected self-restart', async () => {
+    api.pullAndUpdateApp.mockRejectedValueOnce(new Error('Server unreachable — check your connection and try again'));
+    render(<RepositorySourcePanel appId="portos-default" appName="PortOS" />);
+
+    fireEvent.click(await screen.findByRole('button', { name: 'Update app' }));
+    fireEvent.click(within(await screen.findByRole('dialog')).getByRole('button', { name: 'Update app' }));
+
+    await waitFor(() => expect(api.handleSelfRestart).toHaveBeenCalledOnce());
+  });
+
   it('refuses automatic fork sync after divergence but still permits updating from the fork as-is', async () => {
     const status = canonicalStatus();
     status.sources[0] = source({