Trying to use push event

.github/workflows/release_branches.yml

@@ -1,17 +1,12 @@
 name: ReleaseCI
 on: # yamllint disable-line rule:truthy
-  pull_request:
-    branches:
-      - '21.**'
-      - '22.**'
-      - '23.**'
-      - '24.**'
   push:
     branches:
       - '21.**'
       - '22.**'
       - '23.**'
       - '24.**'
+      - 'backport/**'
 jobs:
   DockerHubPush:
     runs-on: [self-hosted, style-checker]
@@ -94,7 +89,6 @@ jobs:
           docker kill $(docker ps -q) ||:
           docker rm -f $(docker ps -a -q) ||:
           sudo rm -fr $TEMP_PATH
-
   BuilderDebAsan:
     needs: [DockerHubPush]
     runs-on: [self-hosted, builder]

tests/ci/pr_info.py

@@ -8,6 +8,23 @@ from unidiff import PatchSet
 
 DIFF_IN_DOCUMENTATION_EXT = [".html", ".md", ".yml", ".txt", ".css", ".js", ".xml", ".ico", ".conf", ".svg", ".png", ".jpg", ".py", ".sh"]
 
+def get_pr_for_commit(sha):
+    try_get_pr_url = f"https://api.github.com/repos/{os.getenv('GITHUB_REPOSITORY', 'ClickHouse/ClickHouse')}/commits/{sha}/pulls"
+    try:
+        response = requests.get(try_get_pr_url)
+        response.raise_for_status()
+        data = response.json()
+        if len(data) > 1:
+            print("Got more than one pr for commit", sha)
+        for pr in data:
+            if 'release' in {label['name'] for label in pr['labels']}:
+                return pr
+        first_pr = data[0]
+        return first_pr
+    except Exception as ex:
+        print("Cannot fetch PR info from commit", ex)
+    return None
+
 class PRInfo:
     def __init__(self, github_event, need_orgs=False, need_changed_files=False):
         if 'pull_request' in github_event: # pull request and other similar events
@@ -46,22 +63,32 @@ class PRInfo:
                 self.changed_files = { f.path for f in diff_object }
 
         elif 'commits' in github_event:
-            self.number = 0
             self.sha = github_event['after']
-            self.labels = {}
-            self.repo_full_name = os.getenv('GITHUB_REPOSITORY', 'ClickHouse/ClickHouse')
+            pull_request = get_pr_for_commit(self.sha)
             repo_prefix = f"{os.getenv('GITHUB_SERVER_URL', 'https://github.com')}/{os.getenv('GITHUB_REPOSITORY', 'ClickHouse/ClickHouse')}"
             self.task_url = f"{repo_prefix}/actions/runs/{os.getenv('GITHUB_RUN_ID')}"
             self.commit_html_url = f"{repo_prefix}/commits/{self.sha}"
-            self.pr_html_url = f"{repo_prefix}/commits/master"
-            self.base_ref = "master"
-            self.base_name = self.repo_full_name
-            self.head_ref = "master"
-            self.head_name = self.repo_full_name
+            self.repo_full_name = os.getenv('GITHUB_REPOSITORY', 'ClickHouse/ClickHouse')
+            if pull_request is None or pull_request['state'] == 'closed': # it's merged PR to master
+                self.number = 0
+                self.labels = {}
+                self.pr_html_url = f"{repo_prefix}/commits/master"
+                self.base_ref = "master"
+                self.base_name = self.repo_full_name
+                self.head_ref = "master"
+                self.head_name = self.repo_full_name
+            else:
+                self.number = pull_request['number']
+                self.labels = { l['name'] for l in pull_request['labels'] }
+                self.base_ref = pull_request['base']['ref']
+                self.base_name = pull_request['base']['repo']['full_name']
+                self.head_ref = pull_request['head']['ref']
+                self.head_name = pull_request['head']['repo']['full_name']
+                self.pr_html_url = pull_request['html_url']
 
             if need_changed_files:
                 commit_before = github_event['before']
-                response = requests.get(f"{os.getenv('GITHUB_SERVER_URL')}/repos/{os.getenv('GITHUB_REPOSITORY')}/compare/{commit_before}...{self.sha}")
+                response = requests.get(f"https://api.github.com/repos/{os.getenv('GITHUB_REPOSITORY')}/compare/{commit_before}...{self.sha}")
                 response.raise_for_status()
                 diff = response.json()