refactor: don't add purge as remote when upgrading (react-native-comm…

…unity#245)

packages/cli/src/commands/upgrade/__tests__/upgrade.test.js

@@ -126,8 +126,6 @@ test('fetches regular patch, adds remote, applies patch, installs deps, removes
   expect(flushOutput()).toMatchInlineSnapshot(`
 "info Fetching diff between v0.57.8 and v0.58.4...
 [fs] write tmp-upgrade-rn.patch
-$ execa git remote add tmp-rn-diff-purge https://github.com/react-native-community/rn-diff-purge.git
-$ execa git fetch --no-tags tmp-rn-diff-purge
 $ execa git apply --check tmp-upgrade-rn.patch --exclude=package.json -p2 --3way
 info Applying diff...
 $ execa git apply tmp-upgrade-rn.patch --exclude=package.json -p2 --3way
@@ -141,7 +139,6 @@ $ execa git add yarn.lock
 $ execa git add package-lock.json
 info Running \\"git status\\" to check what changed...
 $ execa git status
-$ execa git remote remove tmp-rn-diff-purge
 success Upgraded React Native to v0.58.4 🎉. Now you can review and commit the changes"
 `);
   expect(
@@ -177,8 +174,6 @@ test('cleans up if patching fails,', async () => {
   expect(flushOutput()).toMatchInlineSnapshot(`
 "info Fetching diff between v0.57.8 and v0.58.4...
 [fs] write tmp-upgrade-rn.patch
-$ execa git remote add tmp-rn-diff-purge https://github.com/react-native-community/rn-diff-purge.git
-$ execa git fetch --no-tags tmp-rn-diff-purge
 $ execa git apply --check tmp-upgrade-rn.patch --exclude=package.json -p2 --3way
 info Applying diff (excluding: package.json, .flowconfig)...
 $ execa git apply tmp-upgrade-rn.patch --exclude=package.json --exclude=.flowconfig -p2 --3way
@@ -187,7 +182,6 @@ error Automatically applying diff failed
 [fs] unlink tmp-upgrade-rn.patch
 $ execa git status -s
 error Patch failed to apply for unknown reason. Please fall back to manual way of upgrading
-$ execa git remote remove tmp-rn-diff-purge
 info You may find these resources helpful:
 • Release notes: https://github.com/facebook/react-native/releases/tag/v0.58.4
 • Comparison between versions: https://github.com/react-native-community/rn-diff-purge/compare/version/0.57.8..version/0.58.4

packages/cli/src/commands/upgrade/upgrade.js

@@ -178,8 +178,6 @@ async function upgrade(argv: Array<string>, ctx: ContextT, args: FlagsT) {
   if (args.legacy) {
     return legacyUpgrade.func(argv, ctx);
   }
-  const rnDiffGitAddress = `${rnDiffPurgeUrl}.git`;
-  const tmpRemote = 'tmp-rn-diff-purge';
   const tmpPatchFile = 'tmp-upgrade-rn.patch';
   const projectDir = ctx.root;
   const {version: currentVersion} = require(path.join(
@@ -215,8 +213,6 @@ async function upgrade(argv: Array<string>, ctx: ContextT, args: FlagsT) {
 
   try {
     fs.writeFileSync(tmpPatchFile, patch);
-    await execa('git', ['remote', 'add', tmpRemote, rnDiffGitAddress]);
-    await execa('git', ['fetch', '--no-tags', tmpRemote]);
     patchSuccess = await applyPatch(currentVersion, newVersion, tmpPatchFile);
   } catch (error) {
     throw new Error(error.stderr || error);
@@ -245,8 +241,6 @@ async function upgrade(argv: Array<string>, ctx: ContextT, args: FlagsT) {
       logger.info('Running "git status" to check what changed...');
       await execa('git', ['status'], {stdio: 'inherit'});
     }
-    await execa('git', ['remote', 'remove', tmpRemote]);
-
     if (!patchSuccess) {
       if (stdout) {
         logger.warn(