How do you merge two Git repositories?

Question

Consider the following scenario:

I have developed a small experimental project A in its own Git repo. It has now matured, and I\'d like A to be part of larger projec

Answer 1

Similar to @Smar but uses file system paths, set in PRIMARY and SECONDARY:

PRIMARY=~/Code/project1
SECONDARY=~/Code/project2
cd $PRIMARY
git remote add test $SECONDARY && git fetch test
git merge test/master

Then you manually merge.

(adapted from post by Anar Manafov)