Expect script for Jenkins to determine if current git branch is desired branch. Using "git branch" & matching the current branch with the * worked in terminal but not when started by Jenkins. Script returns only the current branch name, w/out the asterisk, allowing pattern match to work as expected.

jenkinsConfirmGit.exp

# Your script here that logs into your git repo

expect "$"

# Echo current git branch without the dreaded *.
send "git rev-parse --abbrev-ref HEAD\r"

expect {
    default {
        #If current branch isn't what you want to test on, error out to ensure Jenkins recognizes problem.
        puts "Site is not on desired branch.  Force error."
        error
    }
    "$branch" {
        #If siteis pointed at desired branch, perform git pull and exit.
        puts "On correct branch, perform git pull."
        send "git pull\r"
        expect "$"
    }
}

#Your script to exit out of terminal here.