Updated README.md (#1354)

Co-authored-by: repo-ranger[bot] <repo-ranger[bot]@users.noreply.github.com>

README.md

@@ -369,6 +369,7 @@ Support this project with a :star:
 |                     sha                      | string |  false   |                           |                                                                                          Specify a different commit SHA <br>used for comparing changes                                                                                            |
 |                    since                     | string |  false   |                           |                                                                               Get changed files for commits <br>whose timestamp is older than <br>the given time.                                                                                 |
 |           since\_last\_remote\_commit           | string |  false   |         `"false"`         | Use the last commit on <br>the remote branch as the <br>`base_sha`. Defaults to the last <br>non-merge commit on the target <br>branch for pull request events <br>and the previous remote commit <br>of the current branch for <br>push events.  |
+|              skip\_initial\_fetch              | string |  false   |         `"false"`         |                                                                                                Skip the initial fetch to <br>improve performance.                                                                                                 |
 |                    token                     | string |  false   |  `"${{ github.token }}"`  |                                                                                         Github token used to fetch <br>changed files from Github's API.                                                                                           |
 |                    until                     | string |  false   |                           |                                                                              Get changed files for commits <br>whose timestamp is earlier than <br>the given time.                                                                                |
 |              write\_output\_files              | string |  false   |         `"false"`         |                            Write outputs to the `output_dir` <br>defaults to `.github/outputs` folder. **NOTE:** <br>This creates a `.txt` file <br>by default and a `.json` <br>file if `json` is set <br>to `true`.                             |