fix(core): git hasher identifies deleted files

Closes nrwl#4201

packages/workspace/src/core/hasher/git-hasher.spec.ts

@@ -5,15 +5,19 @@ import { getFileHashes } from './git-hasher';
 
 describe('git-hasher', () => {
   let dir;
+  const warnSpy = jest.spyOn(console, 'warn');
 
   beforeEach(() => {
     dir = dirSync().name;
     run(`git init`);
     run(`git config user.email "[email protected]"`);
     run(`git config user.name "test"`);
+
+    warnSpy.mockClear();
   });
 
   afterEach(() => {
+    expect(console.warn).not.toHaveBeenCalled();
     removeSync(dir);
   });
 

packages/workspace/src/core/hasher/git-hasher.ts

@@ -32,11 +32,16 @@ function parseGitStatus(output: string): Map<string, string> {
   for (let i = 0; i < chunks.length; i++) {
     const chunk = chunks[i];
     if (chunk.length) {
-      const change = chunk[0];
-      if (change === 'R') {
+      // The XY is the two-letter status code.
+      // See: https://git-scm.com/docs/git-status#_short_format
+      const X = chunk[0].trim();
+      const Y = chunk[1].trim();
+      const filename = chunk.substring(3);
+      if (X === 'R') {
         changes.set(chunks[++i], 'D');
       }
-      changes.set(chunk.substring(2).trim(), change);
+      // If both present, Y shows the status of the working tree
+      changes.set(filename, Y || X);
     }
   }
   return changes;
@@ -49,7 +54,7 @@ function spawnProcess(command: string, args: string[], cwd: string): string {
       `Failed to run ${command} ${args.join(' ')}.\n${r.stdout}\n${r.stderr}`
     );
   }
-  return r.stdout.toString().trim();
+  return r.stdout.toString().trimEnd();
 }
 
 function getGitHashForFiles(