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There are a few things I don’t understand about the output of git clone. In the following example :
Cloning into 'omap-kernel'...
remote: Counting objects: 2649896, done.
remote: Compressing objects: 100% (418466/418466), done.
remote: Total 2649896 (delta 2218148), reused 2636767 (delta 2205019)
Receiving objects: 100% (2649896/2649896), 575.45 MiB | 4.76 MiB/s, done.
Resolving deltas: 100% (2218148/2218148), done.
What does objects, delta and reused mean?
Git stores everything in objects (thing like blobs, trees, commits). The Pro Git book has a great introduction chapter (Git Internals) on the topic. The section about Git Objects is a great tutorial on how to create those by hand, and how git operates with those resources.
The total and reused info are displayed because git also compresses the data (see the descrioption of
git gcfor the details). Otherwise there were quite a lot of redundancy in the repository.