dynamically replace branch name in jenkinsfile - jenkins

Question

I am new to Jenkins, and stuck at replacing branch name in Jenkinsfile from Jenkins.
I want to write a common Jenkinsfile, and in that I want to pick branch name from Jenkins. Below is the snippet from my Jenkinsfile
checkout([$class: 'GitSCM', branches: [[name: '*/master']],
Whatever the branch name I select from Jenkins, it should replace the same in Jenkinsfile and do the build.
I have gone through the answers
parametrized build
Somewhat not able to do the same.
Can anyone refer me to the doc/link which I can go through and implement the same?
My Changes:
checkout([$class: 'GitSCM', branches: [[name: 'params.Branch_Select']],
enter image description here

Answer 1

I have fixed the above question. UNCHECK the box.

Answer 2

In your Jenkinsfile, add a parameters section which will accept BRANCH_NAME as parameter
parameters {
string(defaultValue: "master", description: 'enter the branch name to use', name: 'BRANCH_NAME')
}
and use that variable in your checkout step as follows:
checkout([$class: 'GitSCM', branches: [[name: "*/${BRANCH_NAME}"]]])
Note: You have to run the build once to see the 'Build with parameters' option.
Sample pipeline with just a checkout stage:
pipeline{
agent any
parameters {
string(defaultValue: "develop", description: 'enter the branch name to use', name: 'BRANCH_NAME')
}
stages{
stage('Checkout'){
steps{
checkout([$class: 'GitSCM', branches: [[name: "*/${BRANCH_NAME}"]], gitTool: 'jgit', userRemoteConfigs: [[url: "https://github.com/githubtraining/hellogitworld.git"]]])
//checkout([$class: 'GitSCM', branches: [[name: "*/${BRANCH_NAME}"]],url:'https://github.com/brianmyers/hello'])
}
}
}
}