+ case $project in
+ lttng-*)
+ # This is necessary since a cherry pick can have the same change id
+ # across branches. Still this is only valid for projects where the
+ # branch name fits the same branch name style of the lttng-tools
+ # project.
+ # We will need to be much more clever if the situation arise where
+ # we need to depends-on a cherry picked change id for the
+ # userspace-rcu or babeltrace project. Until then let's use this
+ # hack. The quick solution to this is to tell the committer to change
+ # the change id. We could also be clever and require that the
+ # "branch name" be included in the `Depends-on` clause.
+ local_query="${gerrit_url}/changes/?q=change:${gerrit_id}+branch:${GERRIT_BRANCH}${gerrit_query}"
+ default_branch="${GERRIT_BRANCH}"
+ ;;
+ *)
+ local_query="${gerrit_url}/changes/?q=change:${gerrit_id}${gerrit_query}"
+ default_branch="master"
+ ;;
+ esac
+
+ json_doc=$(curl "$local_query" | tail -n+2)
+ count=$(jq -r '. | length' <<< "$json_doc")
+ if [ "$count" != "1" ]; then
+ echo "Expected an array of size 1 got $count"
+ exit 1
+ fi
+
+ ref=$(jq -r "$gerrit_json_query" <<< "$json_doc")
+ change_status=$(jq -r "$gerrit_json_query_status" <<< "$json_doc")
+ if [ "$change_status" == "MERGED" ]; then
+ # When the change we depends on is merged use master as the ref.
+ # This is not ideal CI time wise since we do not reuse artifacts.
+ # This solve a tricky situation where we actually want to use master
+ # instead of the change available on gerrit. Intermediary changes
+ # present in master could have an impact on the change under test.
+ echo "Depends-on change is MERGED. Defaulting to ${default_branch}"
+ ref="refs/heads/$default_branch"
+ elif [ "$change_status" == "ABANDONED" ]; then
+ # We have a situation where the "HEAD" commit for feature branch are
+ # not merged and abandoned. Default to the master branch and hope
+ # for the best. This is far from ideal but we need might also need
+ # to find a better way to handle feature branch here. In the
+ # meantime use master for such cases.
+ echo "Depends-on change is ABANDONED. Defaulting to ${default_branch}"
+ ref="refs/heads/${default_branch}"
+ fi
+
+ # The build.sh script from userspace-rcu expects the source to be located in
+ # `liburcu` instead of userspace-rcu. Accommodate for this here.
+ if [ "$project" = "userspace-rcu" ]; then
+ clone_directory="liburcu"
+ else
+ clone_directory="$project"
+ fi
+
+ clone_directory="$WORKSPACE/src/$clone_directory"
+
+ git clone "${gerrit_url}/${project}" "$clone_directory"
+ pushd "$clone_directory"