Install 'Extended Choice Parameter Plug-In', then selected 'Basic Parameter Types', input 'Number of Visible Items' with 100 and 'Delimiter' with ',', selected Groovy Script and input this script.

find-all-branches.groovy

def gitURL = "git@github.com:xxxxx.git"
def command = "git ls-remote -h $gitURL"

def proc = command.execute()
proc.waitFor()         

if ( proc.exitValue() != 0 ) {
    return ["develop", "master"]
}     

def branches = proc.in.text.readLines().collect {
    it.replaceAll(/[a-z0-9]*\trefs\/heads\//, '') 
}
branches -= ["develop", "master"]
branches = ["develop", "master"] + branches
return branches.join(",")