Using multibranch pipeline clones the entire repository on the master instead of just getting the Jenkinsfile with the lighweight method. The lightweight checkout is the default behaviour as far as I know, but it's not working in my case. The clone is repeated when the pipeline starts on a slave machine, of course. Here is my setup:

Branch Sources / Bitbucket server (connection is fine)

Behaviours:

Discover branches

Advanced clone behaviours:

• Fetch tags: unchecked
• Honor refspec on initial clone: checked
• Shallow clone: checked
• Shallow clone depth: 1
• Path to reference repo to use during clone: empty
• Timeout: empty

Build strategies: Skip initial build on first branch indexing

Build configuration:

• Mode: by Jenkinsfile
• Script path: build/jenkins/compile/Jenkinsfile

Please find the checkout log in the attachment.