Do not return all files when checking changed files from last commit (#7228)

Author: rafeca

CHANGELOG.md

@@ -53,6 +53,7 @@
 - `[jest-runtime]` Fix missing coverage when using negative glob pattern in `testMatch` ([#7170](https://github.com/facebook/jest/pull/7170))
 - `[*]` Ensure `maxWorkers` is at least 1 (was 0 in some cases where there was only 1 CPU) ([#7182](https://github.com/facebook/jest/pull/7182))
 - `[jest-runtime]` Fix transform cache invalidation when requiring a test file from multiple projects ([#7186](https://github.com/facebook/jest/pull/7186))
+- `[jest-changed-files]` Return correctly the changed files when using `lastCommit=true` on Mercurial repositories ([#7228](https://github.com/facebook/jest/pull/7228))
 
 ### Chore & Maintenance
 

packages/jest-changed-files/src/hg.js

@@ -41,7 +41,7 @@ const adapter: SCMAdapter = {
     } else if (options && options.changedSince) {
       args.push('--rev', `ancestor(., ${options.changedSince})`);
     } else if (options && options.lastCommit === true) {
-      args.push('-A');
+      args.push('--change', '.');
     }
     args.push(...includePaths);