我编写了一个Jenkins管道，该管道克隆了一个git存储库并运行MSBUILD构建。

我使用GitSCM将存储库克隆到工作区中，如下所示：

stage ('Checkout SCM & Merge master to feature branch') {
    checkout([$class: 'GitSCM', branches: [[name: '*/feature/*']], doGenerateSubmoduleConfigurations: false, extensions: [], submoduleCfg: [], userRemoteConfigs: [[credentialsId: '99f978af-XXXX-XXXX-8147-2cf8f69ef864', url: 'http://TFS_SERVER:8080/tfs/DefaultCollection/PC_International/_git/REPO_NAME']]])
}

克隆回购步骤之后，HEAD指向一个分离的头，我不明白为什么。

Started by user itai ganot
[Pipeline] node
Running on master in C:\Program Files (x86)\Jenkins\workspace\bbb
[Pipeline] {
[Pipeline] stage
[Pipeline] { (Setup)
[Pipeline] deleteDir
[Pipeline] }
[Pipeline] // stage
[Pipeline] stage
[Pipeline] { (Checkout SCM & Merge master to feature branch)
[Pipeline] checkout
Cloning the remote Git repository
Cloning repository http://pctfs1:8080/tfs/DefaultCollection/PC_International/_git/Ensure-pcs-intl
 > git.exe init C:\Program Files (x86)\Jenkins\workspace\bbb # timeout=10
Fetching upstream changes from http://TFS_SERVER:8080/tfs/DefaultCollection/PC_International/_git/Ensure-pcs-intl
 > git.exe --version # timeout=10
using GIT_SSH to set credentials javab SSH file
 > git.exe fetch --tags --progress http://TFS_SERVER:8080/tfs/DefaultCollection/PC_International/_git/REPO_NAME +refs/heads/*:refs/remotes/origin/*
 > git.exe config remote.origin.url http://TFS_SERVER:8080/tfs/DefaultCollection/PC_International/_git/REPO_NAME # timeout=10
 > git.exe config --add remote.origin.fetch +refs/heads/*:refs/remotes/origin/* # timeout=10
 > git.exe config remote.origin.url http://TFS_SERVER:8080/tfs/DefaultCollection/PC_International/_git/REPO_NAME # timeout=10
Fetching upstream changes from http://TFS_SERVER:8080/tfs/DefaultCollection/PC_International/_git/REPO_NAME
using GIT_SSH to set credentials javab SSH file
 > git.exe fetch --tags --progress http://TFS_SERVER:8080/tfs/DefaultCollection/PC_International/_git/REPO_NAME +refs/heads/*:refs/remotes/origin/*
Seen branch in repository origin/feature/merge_tfs
Seen branch in repository origin/master
Seen branch in repository origin/origin
Seen 3 remote branches
 > git.exe tag -l # timeout=10
Checking out Revision 97b3493db4f726e11e334e5ba34fa808b63edec5 (origin/feature/merge_tfs)
 > git.exe config core.sparsecheckout # timeout=10
 > git.exe checkout -f 97b3493db4f726e11e334e5ba34fa808b63edec5
First time build. Skipping changelog.
[Pipeline] bat
[bbb] Running batch script

C:\Program Files (x86)\Jenkins\workspace\bbb>cd C:\Program Files (x86)\Jenkins\workspace\bbb

C:\Program Files (x86)\Jenkins\workspace\bbb>git branch 
* (HEAD detached at 97b3493)

不仅如此，众所周知，在运行Jenkins管道时，无法正确评估git参数，因此，我无法通过简单地运行它来修复它：

git checkout ${BRANCH_NAME}

因此，在启动MSBUILD步骤之前，如何确定HEAD指向分支名称？

我确定有人已经遇到这种情况并找到了解决方案。