Only remove master from request if it was requested

Signed-off-by: Patrick Uiterwijk <puiterwijk@redhat.com>

roles/distgit/templates/pkgdb_sync_git_branches.py

@@ -189,6 +189,7 @@ def branch_package(pkgname, branches):
     if not os.path.exists(
             os.path.join(GIT_FOLDER, '%s.git' % pkgname)):
         _invoke(SETUP_PACKAGE, [pkgname])
+        if 'master' in branches:
             branches.remove('master')  # SETUP_PACKAGE creates master
             fedmsg.publish(
                 topic='branch',