有多种方法可以实现此结果.第一个天真的选择是使用git log并使用grep搜索特定的提交，但这并不总是精确的

There are multiple ways to achieve this result. First naive option is to use git log and search for a specific commit using grep, but that is not always precise

git log | grep <commit_id>

***直接使用git branch来使用

git branch --contains $COMMIT_ID

下一步是找出当前分支，自git 1.8.1开始使用

The next step is finding out current branch which can be done since git 1.8.1 using

git symbolic-ref --short HEAD

并合并为

git branch $(git symbolic-ref --short HEAD) --contains $COMMIT_ID

但是上面的命令不会返回true或false，并且有一个较短的版本，如果提交在当前分支中，则返回退出代码0；否则，则返回退出代码1

But the command above doesn't return true or false and there is a shorter version that returns exit code 0 if commit is in current branch OR exit code 1 if not

git merge-base --is-ancestor $COMMIT_ID HEAD

退出代码很好，但是当您想要字符串true或false作为答案时，您需要添加一些内容，然后与bash中的if结合使用

Exit code is nice, but as you want string true or false as answer you need to add a bit more and then combined with if from bash you get

if [ 0 -eq $(git merge-base --is-ancestor $COMMIT_ID HEAD) ]; then echo "true"; else echo "false"; fi