Javascript 如何使用nodegit在本地创建分支、setUpStream和推送新更改？

我已连接到git repo createdbranch，已在本地签出。现在我想将此分支设置为上游分支，并使用新更改推送到远程repo，返回错误键。未找到任何帮助将不胜感激

main.js

      const nodegit = require('nodegit');
const createBranch = function(data){
       const  branchName = "nodegitBranchTest";
       console.log("PROMISE4", data.commit);
       return data.repo.createBranch(branchName, data.commit, 1).then(function(res){
           console.log("RES>>>>>", res.name());
            return {data , res , branchName};
       });
    }
      const checkOutBranch = function(data){
            const  branchName = data.branchName;
            return repo.checkoutBranch(branchName).then(function(ref){
                return ref;
             });
         }
    
         const setUpstream = function (obj) { 
            // ob.ref is branch reference locally 'ref/remote/heads/newBranch
            return nodegit.Branch.setUpstream(obj.res, obj.res);
         }
    
     nodegit.Repository.open(dir)
        .then(createBranch)
        .then(checkOutBranch)
        .then(setUpstream)
        .then(function(res){
            console.log("PROMISE5", res);
        })
        .catch(function(err){
            console.log("ERRR>>>>>>>", err);
        });

错误

 [Error: could not find key 'branch.nodegitBranchTest.remote' to delete] errno: -1, errorFunction: 'Branch.setUpstream' }