Select checkout branch dependent on a build parameter

[Christian]

Hello,

I have a question. I need to select the branch to checkout dependent on a build parameter. And the branch name does not equal the parameters. If the parameter equals foo1 I need to checkout branch origin/bar1 and for foo2 origin/bar2. Is that possible? 

I could only get that far that I can checkout different branches when using the build parameter directly (origin/{$build_param}). I thought about setting a variable with the EnvInject Plugin, but it seems that the checkout step cannot access these variables, or am i missing something there?

It is a maven build, no pipeline

thank you and best regards,

Christian