Manage before_exit() & clean git repo

Fixes #1125
quick build push

.cspell.json

@@ -392,6 +392,7 @@
         "columnsep",
         "columnseprule",
         "commandline",
+        "commmands",
         "compat",
         "compojure",
         "cond",

CHANGELOG.md

@@ -15,6 +15,9 @@ Note: Can be used with `megalinter/megalinter@beta` in your GitHub Action mega-l
     - standard
     - stylelint
 
+- Fixes
+  - Remove extraheader in git repo when using Azure Pipelines ([#1125](https://github.com/megalinter/megalinter/issues/1125))
+
 - Linter versions upgrades
   - [markdown-table-formatter](https://www.npmjs.com/package/markdown-table-formatter) from 1.2.0 to **1.3.0** on 2022-01-31
   - [checkov](https://www.checkov.io/) from 2.0.775 to **2.0.777** on 2022-01-31

megalinter/MegaLinter.py

@@ -89,6 +89,7 @@ def __init__(self, params=None):
         self.file_names_regex = []
         self.status = "success"
         self.return_code = 0
+        self.has_git_extraheader = False
         self.has_updated_sources = 0
         self.flavor_suggestions = None
         # Initialize plugins
@@ -169,10 +170,10 @@ def run(self):
         # Generate reports
         for reporter in self.reporters:
             reporter.produce_report()
+        # Process commmands before closing MegaLinter
+        self.before_exit()
         # Manage return code
         self.check_results()
-        # Display upgrade recommendation if necessary
-        self.manage_upgrade_message()
 
     # noinspection PyMethodMayBeStatic
     def process_linters_serial(self, active_linters, _linters_do_fixes):
@@ -504,6 +505,7 @@ def list_files_git_diff(self):
                 "GIT_AUTHORIZATION_BEARER"
             )
             repo.config_writer().set_value("http", "extraheader", auth_bearer).release()
+            self.has_git_extraheader = True
         # Fetch base branch content
         default_branch = config.get("DEFAULT_BRANCH", "HEAD")
         default_branch_remote = f"origin/{default_branch}"
@@ -648,6 +650,19 @@ def check_results(self):
                     sys.exit(self.return_code)
             config.delete()
 
+    def before_exit(self):
+        # Clean git repository
+        self.manage_clean_git_repo()
+        # Display upgrade recommendation if necessary
+        self.manage_upgrade_message()
+
+    def manage_clean_git_repo(self):
+        # Add auth header if necessary
+        if self.has_git_extraheader is True:
+            repo = git.Repo(os.path.realpath(self.github_workspace))
+            repo.config_writer().set_value("http", "extraheader", "").release()
+
+    # Propose legacy versions users to upgrade
     def manage_upgrade_message(self):
         mega_linter_version = config.get("BUILD_VERSION", "No docker image")
         if "insiders" in mega_linter_version or "v4" in mega_linter_version: