How to substitute a task in Jenkins having a GIT branch as a variable?

Question

Java

Good afternoon!
How to set Git branch name as variable in Jenkins Job?
Those. now the config contains the following line:
Branch Specifier (blank for 'any')
refs/heads/${GIT_BRANCH}
In this case origin/master, , but only master.
You can't directly write the branch name because there are multiple branches.