如何解决git 2个地方的代码不一致.

初始情况是, a和b的代码库是完全相同的.

1, a修改了代码.然后成功push到 bitbucket
2, a做了更改是: 程序中的目录app/storage/sessions/刚开始没有加入到.gitignore中,所以a在.gitignore中加了这个目录.其它的是一些程序的代码.
3, b本身有代码,但没有修改.因为a更新了,所以b进行pull操作,可能是因为.gitignore冲突,git有提示到git reset --hard这一句,以为是会重置(reset这英语),就选了另一项(忘了选了什么了),然后进行平常的pull,commit,提示pull到bitbucket成功了,但看代码却没有看到a所做的更改.没在意,b就继续修改代码,push到远程.b这边提示这个.

b以为自已看懂了,选择了
$ git add --ignore-removal app/storage/sessions/

然后..上bitbucket一看,发现刚才a所做的更改全被删除了..

例如:像图片中这些是a加入的东西, 还有很多其他的代码,...现在全被删除掉了..

怎么恢复a成功push的更改,同时也保留b的这次更改呢? a的commit有160个文件改动,b的也有60多...除了a和b2人商讨根据代码一条条的对照思路进行恢复,有没有比较好的方案呢? 谢谢啦 ...

更新:

按照@nightire的回答, a这边进行了如下操作

# git add .
# git commit -m "big wrong! for last your git-commits"
On branch php-v0.0.1
Your branch is up-to-date with 'origin/php-v0.0.1'.

nothing to commit, working directory clean

所以,a修改了一个文件,加了一个空行,然后重新# git push --force orgin php-v0.0.1:php-v0.0.1

接着,b这边进行如下操作

$ git pull origin php-v0.0.1:php-v0.0.1
Password for 'https://Deloz@bitbucket.org':
remote: Counting objects: 15, done.
remote: Compressing objects: 100% (6/6), done.
remote: Total 6 (delta 4), reused 2 (delta 0)
Unpacking objects: 100% (6/6), done.
From https://bitbucket.org/deloz/xxxxx
 ! [rejected]        php-v0.0.1 -> php-v0.0.1  (non-fast-forward)
 + c344522...14bd65e php-v0.0.1 -> origin/php-v0.0.1  (forced update)

好像b又操作错了,这分支好像不对呀,然后b又来了一次不加参数了pull,如下

$ git pull
Password for 'https://Deloz@bitbucket.org':
Merge made by the 'recursive' strategy.
 app/database/migrations/xxxxxx.php | 1 +
 1 file changed, 1 insertion(+)

此时,b这边仍然没有a加入的文件和a之前(b出错前,a修改并push成功的代码)的修改.(这次a是加了一个空行,b这边也成功反映出来了.)...

再更新:

根据大家的看法和方案
a操作

# git log --pretty=oneline
14bd65ee1b14c1f06be98b22bc6cb5feb2039656 big wrong! for last your git-commits
3c96695b53f7d4e8dd78c9025044cea1d4cc0472 这个是正确的时候a所push的
00f0cdd6b8861d64a7930b823f552888edebdc11 xxxxxxxxxx
668fde30ad1d5d76b550f572ba6b64ae14a1e715 xxxxxx
8a80bb0eb9387db68119bbd7e0d15677ed7aa1f1 xxxxx
7ca8599be1ceb1dde6766315543209bf1bb761ce xxxxx^
bba184c4f324ed99b3fb580c103aba3505a688a5 xxxxxxxxx
458182037cfa54b8447b617c119d134ada250462 xxxxxxxxx
0029b46ac999f2c4d59c8cfb194ed1c2653fa1f4 xxxxxxn

b使用了git revert commit,代码没回滚到正确的commit去..应该是用错了..

$ git log --pretty=oneline
06661f005bc306796d2101633f68c2d01cd6bac3 re push (b push上来的)
3e34c6f8c177c67d487c7858720ac383e77738e2 Revert "Revert "big wrong! for last you  (b push上来的)
bcf07a9836aaaa9bdd505094b0859c13322f4519 Revert "big wrong! for last your git-co (b push上来的)
885c117de5ef67f430e0d3f8b0b1647a1cd14ee8 Merge branch 'php-v0.0.1' of https://bi (b push上来的)
14bd65ee1b14c1f06be98b22bc6cb5feb2039656 big wrong! for last your git-commits(a加空行后 push上来的)
c344522e2cba0e85e4b14393d596b992d47f1821 add column to table  (b push上来的)
3c96695b53f7d4e8dd78c9025044cea1d4cc0472 这个是正确的时候a所push的
00f0cdd6b8861d64a7930b823f552888edebdc11 xxxxxxxxxx
668fde30ad1d5d76b550f572ba6b64ae14a1e715 xxxxxx
8a80bb0eb9387db68119bbd7e0d15677ed7aa1f1 xxxxx
7ca8599be1ceb1dde6766315543209bf1bb761ce xxxxx^
bba184c4f324ed99b3fb580c103aba3505a688a5 xxxxxxxxx
458182037cfa54b8447b617c119d134ada250462 xxxxxxxxx
0029b46ac999f2c4d59c8cfb194ed1c2653fa1f4 xxxxxxn

接着
a执行

//备份一下当前a的分支
# git branch php_backup

//把a的分支回滚到 3c96695b53f7d4e8dd78c9025044cea1d4cc0472  因为上一次操作是 push --force了...
# git reset --hard 3c96695b53f7d4e8dd78c9025044cea1d4cc0472
HEAD is now at 3c96695 change some views

//删除远程的bitbucket上的分支
# git push origin :php-v0.0.1
Password for 'https://deloz@bitbucket.org':
To https://deloz@bitbucket.org/deloz/xxx.git
 - [deleted]         php-v0.0.1

//把正确的3c96695b53f7d4e8dd78c9025044cea1d4cc0472, push到远程bitbucket上
# git push origin php-v0.0.1
Password for 'https://deloz@bitbucket.org':
Counting objects: 256, done.
Delta compression using up to 2 threads.
Compressing objects: 100% (220/220), done.
Writing objects: 100% (256/256), 785.09 KiB | 0 bytes/s, done.
Total 256 (delta 64), reused 158 (delta 26)
To https://deloz@bitbucket.org/deloz/xxx.git
 * [new branch]      php-v0.0.1 -> php-v0.0.1

然后, 根据@Guang Chen的方法, b操作

//备份一下B的分支
$ git branch php_bbbb
//把b的分支回滚到 3c96695b53f7d4e8dd78c9025044cea1d4cc0472
$ git reset --hard 3c96695b53f7d4e8dd78c9025044cea1d4cc0472
$ git fetch origin
$ git rebase origin/php-v0.0.1

//看一下log, b和a的一样的状态了.
$ git log --pretty=oneline
3c96695b53f7d4e8dd78c9025044cea1d4cc0472 这个是正确的时候a所push的
00f0cdd6b8861d64a7930b823f552888edebdc11 xxxxxxxxxx
668fde30ad1d5d76b550f572ba6b64ae14a1e715 xxxxxx
8a80bb0eb9387db68119bbd7e0d15677ed7aa1f1 xxxxx
7ca8599be1ceb1dde6766315543209bf1bb761ce xxxxx^
bba184c4f324ed99b3fb580c103aba3505a688a5 xxxxxxxxx
458182037cfa54b8447b617c119d134ada250462 xxxxxxxxx
0029b46ac999f2c4d59c8cfb194ed1c2653fa1f4 xxxxxxn


$ git status
On branch php-v0.0.1
Your branch is up-to-date with 'origin/php-v0.0.1'.

nothing to commit, working directory clean

剩下的就是分支php_bbb里边的不同代码...
使用git diff php-v0.0.1 php_bbbb >> 11.txt ,让b去修改了...
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