fix: Check out branch automatically on GitLab

docs/config/create_release.md

@@ -33,7 +33,7 @@ integrations:
   gitlab:
     create_release:
       project: "60867298"
-      token_variable: "GITLAB_TOKEN"
+      token_variable: "SEMVER_TOKEN"
       title_format: "v%M.%m.%p"
       body: "Auto-generated release."
 ```

src/pagekey_semver/git/effector.py

@@ -46,6 +46,13 @@ def push(self, remote: str, ref: str) -> None:
             ref: Which commit, branch, or tag to push.
         """
 
+    def checkout(self, ref: str) -> None:
+        """Check out a ref.
+
+        Args:
+            ref: Which commit, branch, or tag to checkout.
+        """
+
 
 class CommandGitEffector(GitEffector):
     """Use the Git CLI to make changes to Git."""
@@ -67,3 +74,6 @@ def create_tag(self, name: str) -> None:
 
     def push(self, remote: str, ref: str) -> None:
         self._runner.run(f"git push {remote} {ref}")
+
+    def checkout(self, ref: str) -> None:
+        self._runner.run(f"git checkout {ref}")

src/pagekey_semver/git/manager.py

@@ -87,8 +87,15 @@ def apply_tag(self, existing_tags: List[Tag], new_tag: Tag) -> None:
             new_tag: Tag to be added, if it does not already exist.
         """
         if new_tag not in existing_tags:
+            # Check out branch on GitLab
+            gitlab_branch = os.getenv("CI_COMMIT_BRANCH", "")
+            if len(gitlab_branch) > 0:
+                print(f"Checking out CI_COMMIT_BRANCH={gitlab_branch}")
+                self._effector.checkout(gitlab_branch)
+
             print(f"Tagging/pushing new tag: {new_tag}", flush=True)
             original_git_config = self.get_existing_git_info()
+
             self.set_git_remote()
             self._effector.set_config_item("user.email", self._config.git.email)
             self._effector.set_config_item("user.name", self._config.git.name)