Pull request 2731: ADG-12585-fix-ci

Squashed commit of the following:

commit 7abc4da
Merge: cafaf7d e8e3287
Author: Maksim Kazantsev <m.kazantsev@adguard.com>
Date:   Fri Jul 24 15:12:47 2026 +0300

    Merge branch 'master' into ADG-12585-fix-ci

commit cafaf7d
Author: Maksim Kazantsev <m.kazantsev@adguard.com>
Date:   Fri Jul 24 14:45:51 2026 +0300

    bamboo-specs: fmt;

commit 5c1cb2b
Author: Maksim Kazantsev <m.kazantsev@adguard.com>
Date:   Fri Jul 24 14:15:46 2026 +0300

    bamboo-specs: fmt;

commit 0497ddf
Author: Maksim Kazantsev <m.kazantsev@adguard.com>
Date:   Fri Jul 24 13:54:20 2026 +0300

    bamboo-specs: fmt;

commit 52ab575
Author: Maksim Kazantsev <m.kazantsev@adguard.com>
Date:   Fri Jul 24 13:44:28 2026 +0300

    bamboo-specs: imp docs;

commit 04b004a
Author: Maksim Kazantsev <m.kazantsev@adguard.com>
Date:   Fri Jul 24 13:40:49 2026 +0300

    bamboo-specs: fix ci;

Author: makazantsev

bamboo-specs/test.yaml

@@ -174,10 +174,17 @@
                 # The version.sh script queries the current state of the git
                 # repository, so we must explicitly checkout the revision that
                 # triggered the build to prevent race conditions when the master
-                # branch changes while this build is running.
+                # branch changes while this build is running.  Also, pass BRANCH
+                # so that version.sh can determine the branch name even in
+                # detached HEAD states.
                 git checkout "${bamboo_repository_revision_number}"
 
-                version="$(env CHANNEL=${bamboo_channel} sh ./scripts/make/version.sh)"
+                version="$(
+                    env \
+                      BRANCH=${bamboo_planRepository_branchName} \
+                      CHANNEL=${bamboo_channel} \
+                      sh ./scripts/make/version.sh
+                )"
                 readonly version
 
                 docker info

scripts/make/version.sh

@@ -147,8 +147,11 @@ case "$channel" in
 	last_tag="$(git describe --abbrev=0)"
 	readonly last_tag
 
-	# current_branch is the name of the branch currently checked out.
-	current_branch="$(git rev-parse --abbrev-ref HEAD)"
+	# current_branch is the name of the branch.  Prefer the BRANCH
+	# environment variable when set, since 'git rev-parse --abbrev-ref HEAD'
+	# returns 'HEAD' in detached HEAD states (e.g. after 'git checkout
+	# <commit>').
+	current_branch="${BRANCH:-$(git rev-parse --abbrev-ref HEAD)}"
 	readonly current_branch
 
 	# The branch should be named like: