Add commit messages as commented lines to the template in 'git-obs pr create'

Author: dmach

osc/commands_git/pr_create.py

@@ -22,6 +22,9 @@
 # Creating {source_owner}/{source_repo}#{source_branch} -> {target_owner}/{target_repo}#{target_branch}
 #
 {git_status}
+#
+# Commits:
+{git_commits}
 """.lstrip()
 
 
@@ -137,6 +140,12 @@ def run(self, args):
             else:
                 git_status = "#"
 
+            if use_local_git:
+                git_commits = git._run_git(["log", "--format=- %s", f"{target_branch_obj.commit}..{source_branch_obj.commit}"])
+                git_commits = "\n".join([f"# {i}" for i in git_commits.splitlines()])
+            else:
+                git_commits = "#"
+
             message = gitea_api.edit_message(template=NEW_PULL_REQUEST_TEMPLATE.format(**locals()))
 
             # remove comments