title: Pass on branch name to a script in teamcity
body: <p>I have a python script that runs as build step in teamcity 9.0. Now I need to know the branch name from which the build is triggered. I could use <code>%teamcity.build.branch%</code> to get the branch name. But I need it to be passed on to my script so that I can use it for some condition checking. Is this possible? How? Please help me out.</p>