refactor: minor optimizations

lib/gitWorkflow.js

@@ -27,7 +27,7 @@ const cleanUntrackedFiles = async execGit => {
       'This is probably due to a bug in git =< 2.13.0 where `git stash --keep-index` resurrects deleted files.'
     )
     debug('Deleting the files using `git clean`...')
-    await execGit(['clean', '--force', untrackedFiles.split('\n').join(' ')])
+    await execGit(['clean', '--force', ...untrackedFiles.split('\n')])
   }
 }
 
@@ -94,7 +94,7 @@ class GitWorkflow {
     // These files should be listed and deleted before proceeding.
     await cleanUntrackedFiles(this.execGit)
 
-    // Get a diff of unstaged changes by saved stash against what's left on disk.
+    // Get a diff of unstaged changes by diffing the saved stash against what's left on disk.
     this.unstagedDiff = await this.execGit([
       'diff',
       '--binary',
@@ -119,7 +119,6 @@ class GitWorkflow {
   async applyModifications() {
     let modifiedFiles = await this.execGit(['ls-files', '--modified'])
     if (modifiedFiles) {
-      modifiedFiles = modifiedFiles.split('\n')
       debug('Detected files modified by tasks:')
       debug(modifiedFiles)
       debug('Adding files to index...')