问题
I've been using SVN for all my projects.
Sometimes project B is originating as a copy from project A.
When project A has a generic change, I can use svn merge A within directory B and it will merge those changes.
Now, if I wanted to use git. I don't like having all my projects in the same repository since I then have to clone everything and can't pick just one project like in SVN. But having one repository for each project, how do I go about doing the same like I did earlier with SVN?
The question is: What's the best way to structure it if I want several subprojects that really all relates to one original project and to keep them in sync? And that I also want to be able to check them out separately
回答1:
If you have two projects, proj1 and proj2 and want to merge changes of proj1 into proj2, you would do it like this:
# in proj2:
git remote add proj1 path/to/proj1
git fetch proj1
git merge proj1/master # or whichever branch you want to merge
I believe this does the same thing as what you were doing with SVN.
来源：https://stackoverflow.com/questions/2949738/git-merge-different-repositories