How does Git pull a certain commit of a certain branch?

Question

There are now two branches, namely branch A and branch B. There are several submissions on each branch;
The commits of branch A include a1, a2, a3, a4, a5, a total of five submissions;
The commits of branch B include b1, b2, b3, b4, b5, there are five submissions in total;
is currently on branch A.

Note: The hash values ​​of the above 10 submissions are different.

Excuse me: How can I only pull the b2, b3, and b4 commit nodes of branch B to branch A?

Requires that after pulling to branch A, the original commit information on branch B must be retained.

Please break ╮(￣▽ ￣)╭ ~

The cherry-pick method mentioned by @junnplus is correct, and I can do it too; but is there a better answer?

Answer 1

On branch A, execute

git cherry-pick <commit_id>

Answer 2

If automation is not required, the most convenient way is this:

$ git rebase -i HEAD $name_of_branch_b

The editor will display five lines from b1 to b5, delete the two lines b1 and b5, save and exit.

Answer 3

It may be difficult to have a better answer, right? According to the git-flow的原则，dev-feature一般不会有只合并中间几次提交到devdivided situation, maybe the subject's need is based on unreasonable version management strategy or very special scenarios.

Answer 4

Should only be chrry pick

Answer 5

Everyone is right, there is no good way; but I still have this special need in my actual work process.
Tonight I used my poor shell programming skills to write a program that can achieve my needs, and it can be achieved through cherry-pick.

This small program can fulfill my needs as long as it is executed as follows:

# b5省略时取到最新的节点
cherry-picks B b2 b5

Next is my debut: github link

#!/usr/bin/env bash

# 初始化
targetBranch=
start=
end= #如果没有这读到最新
currentBranch=$(git symbolic-ref HEAD 2>/dev/null | cut -d"/" -f 3)

# 切换到目标分支
git checkout $targetBranch

echo start proccess commit message...

rawList=$(git log | grep '^commit' | sed '1,$s/commit//')

startIndex=$(echo "$rawList" | sed -n "/$start/=" )

# 如果end不为空，取得结束的偏移量，否则默认为1，也就是最新
if [ -n "$end" ]; then
    endIndex=$(echo "$rawList" | sed -n "/$end/=")
else
    endIndex=1
fi

# 取得需要cherry-pick的区间
list=$(echo "$rawList" | head -$startIndex | tail +$endIndex)

## 倒序
list=$(echo "$list" |sed '1!G;h;$!d')


echo '待cherry-pick的有：'
echo list:
echo "$list"
echo

# 切换回当前分支
git checkout $currentBranch

for i in "$list"; do
    git cherry-pick $i
done

echo '完成'
exit 0