git从远程A项目的某一分支基础上创建B项目

需求描述：
    公司小明想在远程的A.git项目的a分支基础上新建一个B.git项目，在B.git项目上可以看到A.git项目的a分支的所有提交记录。

方法步骤：
    1）查看A项目分支，我这里以BCOS项目的3.0.5分支为例，如下：

chenfm@4438fad59b85:~/BCOS$ git branch -a
  3.0.3
  3.0.4
* 3.0.5
  3.0.6
  GW200-2018120519-Release
  devel-2.6
  master
  remotes/origin/3.0.1
  remotes/origin/3.0.2
  remotes/origin/3.0.3
  remotes/origin/3.0.4
  remotes/origin/3.0.5
  remotes/origin/3.0.6

    2）查看3.0.5分支的提交记录，用于后面对照：

chenfm@4438fad59b85:~/BCOS$ git log
commit 952ecbf89bf2040ea4282c14f20e2999e70c96b1
Author: chenfm <[e-mail]>
Date: Wed Jan 30 10:36:53 2019 +0800

    <E5><BA><94><E7><94><A8><E6><B5><81><E9><87><8F><E3><80><81><E7><94><A8><E6><88><B7><E6><B5><81><E9><87><8F><E9><80><9F><E7><8E>

commit d0ffc016bd80098a720719808e6006e4e77ae513
Author: chenfm <[e-mail]>
Date: Tue Jan 29 16:09:05 2019 +0800

    <E6><98><93><E7><94><A8><E6><80><A7><E6><94><B9><E8><BF><9B>bug<EF><BC><9A>1225<EF><BC><8C><E7><BA><BF><E8><B7><AF><E6><B5><81>

commit ff6636de3c81c0e131313830adcf1271d5baa187
Author: zhuliangyou <[e-mail]>
Date: Fri Jan 25 17:41:06 2019 +0800

    fixed snmp v3 get index Maybe no result.

commit 8879b89ff646d3e6fb9b74a9e14a48200457ef68
Author: zhuliangyou <[e-mail]>
Date: Fri Jan 25 11:11:20 2019 +0800

    fixed weixin scan can't jump

commit 97c3300f0cca59b7aa0b3facebe9bacc516ddbd5
Author: zhuliangyou <[e-mail]>
Date: Thu Jan 24 18:43:44 2019 +0800

    fixed snmp v3 support

commit b7e472460f3654edbc84069d018844e7050fa649
Author: zhuliangyou <[e-mail]>
Date: Thu Jan 24 09:47:03 2019 +0800

    fixed snmp can't create cache for webauth

commit ef971d8793170e330762880d6348095edb60ec3e
Author: chenfm <[e-mail]>
Date: Thu Jan 17 17:24:22 2019 +0800

    3）创建B项目，创建过程我这边不做描述，我这里以我已经创建好的test项目为例新建1.0分支

chenfm@4438fad59b85:~/devel/identify/test$ git branch -a
* master
  remotes/origin/HEAD -> origin/master
  remotes/origin/master

    4）在B项目添加A项目分支信息

chenfm@4438fad59b85:~/devel/identify/test$ git branch -a //下面只有master分支
* master
  remotes/origin/HEAD -> origin/master
  remotes/origin/master
chenfm@4438fad59b85:~/devel/identify/test$ git remote add -f BCOS /home/chenfm/BCOS //(BCOS为A项目名称，/home/chenfm/BCOS为A项目路径)
Updating BCOS
warning: no common commits
remote: Counting objects: 21542, done.
remote: Compressing objects: 100% (14824/14824), done.
remote: Total 21542 (delta 4955), reused 20476 (delta 4352)
Receiving objects: 100% (21542/21542), 20.24 MiB | 22.64 MiB/s, done.
Resolving deltas: 100% (4955/4955), done.
From /home/chenfm/BCOS
 * [new branch] 3.0.3 -> BCOS/3.0.3
 * [new branch] 3.0.4 -> BCOS/3.0.4
 * [new branch] 3.0.5 -> BCOS/3.0.5
 * [new branch] 3.0.6 -> BCOS/3.0.6
 * [new branch] GW200-2018120519-Release -> BCOS/GW200-2018120519-Release
 * [new branch] devel-2.6 -> BCOS/devel-2.6
 * [new branch] master -> BCOS/master
chenfm@4438fad59b85:~/devel/identify/test$ git branch -a  //再次查看B项目分支，发现多出了A项目的分支
* master
  remotes/BCOS/3.0.3
  remotes/BCOS/3.0.4
  remotes/BCOS/3.0.5
  remotes/BCOS/3.0.6
  remotes/BCOS/GW200-2018120519-Release
  remotes/BCOS/devel-2.6
  remotes/BCOS/master
  remotes/origin/HEAD -> origin/master
  remotes/origin/master
chenfm@4438fad59b85:~/devel/identify/test$

    5）在B项目上创建1.0分支

chenfm@4438fad59b85:~/devel/identify/test$ git checkout -b 1.0 BCOS/3.0.5  //1.0为要新建的分支，BCOS/3.0.5为基础分支
Branch 1.0 set up to track remote branch 3.0.5 from BCOS.
Switched to a new branch '1.0'
chenfm@4438fad59b85:~/devel/identify/test$ git branch -a  //这个时候1.0还只是在本地
* 1.0
  master
  remotes/BCOS/3.0.3
  remotes/BCOS/3.0.4
  remotes/BCOS/3.0.5
  remotes/BCOS/3.0.6
  remotes/BCOS/GW200-2018120519-Release
  remotes/BCOS/devel-2.6
  remotes/BCOS/master
  remotes/origin/HEAD -> origin/master
  remotes/origin/master
chenfm@4438fad59b85:~/devel/identify/test$ git push origin 1.0 //提交1.0分支到远程仓库
Counting objects: 21382, done.
Delta compression using up to 24 threads.
Compressing objects: 100% (14207/14207), done.
Writing objects: 100% (21381/21381), 20.22 MiB | 2.03 MiB/s, done.
Total 21381 (delta 4857), reused 21332 (delta 4818)
remote: Resolving deltas: 100% (4857/4857), done.
To [e-mail]:cfm5538/test.git
 * [new branch] 1.0 -> 1.0
chenfm@4438fad59b85:~/devel/identify/test$ git branch -a  //这个时候在B项目就可以看到1.0分支了
* 1.0
  master
  remotes/BCOS/3.0.3
  remotes/BCOS/3.0.4
  remotes/BCOS/3.0.5
  remotes/BCOS/3.0.6
  remotes/BCOS/GW200-2018120519-Release
  remotes/BCOS/devel-2.6
  remotes/BCOS/master
  remotes/origin/1.0    //远程仓库已经可以看到新建的分支
  remotes/origin/HEAD -> origin/master
  remotes/origin/master
chenfm@4438fad59b85:~/devel/identify/test$

    6）现在我们查看一下B项目的1.0分支是否包含A项目的3.0.5分支的所有提交记录，跟步骤2对照一下

chenfm@4438fad59b85:~/devel/identify/test$ git log
commit 952ecbf89bf2040ea4282c14f20e2999e70c96b1
Author: chenfm <[e-mail]>
Date: Wed Jan 30 10:36:53 2019 +0800

    <E5><BA><94><E7><94><A8><E6><B5><81><E9><87><8F><E3><80><81><E7><94><A8><E6><88><B7><E6><B5><81><E9><87><8F><E9><80><9F><E7><8E>

commit d0ffc016bd80098a720719808e6006e4e77ae513
Author: chenfm <[e-mail]>
Date: Tue Jan 29 16:09:05 2019 +0800

    <E6><98><93><E7><94><A8><E6><80><A7><E6><94><B9><E8><BF><9B>bug<EF><BC><9A>1225<EF><BC><8C><E7><BA><BF><E8><B7><AF><E6><B5><81>

commit ff6636de3c81c0e131313830adcf1271d5baa187
Author: zhuliangyou <[e-mail]>
Date: Fri Jan 25 17:41:06 2019 +0800

    fixed snmp v3 get index Maybe no result.

commit 8879b89ff646d3e6fb9b74a9e14a48200457ef68
Author: zhuliangyou <[e-mail]>
Date: Fri Jan 25 11:11:20 2019 +0800

    fixed weixin scan can't jump

commit 97c3300f0cca59b7aa0b3facebe9bacc516ddbd5
Author: zhuliangyou <[e-mail]>
Date: Thu Jan 24 18:43:44 2019 +0800

    fixed snmp v3 support

commit b7e472460f3654edbc84069d018844e7050fa649
Author: zhuliangyou <[e-mail]>
Date: Thu Jan 24 09:47:03 2019 +0800

    fixed snmp can't create cache for webauth

end，谢谢！！！