Example pygit2 usage: create a root commit.

gistfile1.txt

>>> from time import time
>>> from pygit2 import Signature
>>> from pygit2 import Repository
>>> from pygit2 import init_repository
>>> from pygit2 import GIT_FILEMODE_BLOB, GIT_FILEMODE_TREE
>>> 
>>> repo = init_repository('/tmp/repodir', bare=True)
>>> tf1 = repo.create_blob('this is a test file')
>>> tf2 = repo.create_blob('some other blob')
>>> tf3 = repo.create_blob('this is a test file2')
>>> tt1 = repo.TreeBuilder()
>>> tt1.insert('test_file1.txt', tf1, GIT_FILEMODE_BLOB)
>>> tt1.insert('test_file2.txt', tf3, GIT_FILEMODE_BLOB)
>>> tt2 = repo.TreeBuilder()
>>> tt3 = repo.TreeBuilder()
>>> tt4 = repo.TreeBuilder()
>>> tt5 = repo.TreeBuilder()
>>> tt5.insert('all_the_way_down.txt', tf2, GIT_FILEMODE_BLOB)
>>> tt4.insert('tt5', tt5.write(), GIT_FILEMODE_TREE)
>>> tt3.insert('tt4', tt4.write(), GIT_FILEMODE_TREE)
>>> tt2.insert('tt3', tt3.write(), GIT_FILEMODE_TREE)
>>> tt1.insert('tt2', tt2.write(), GIT_FILEMODE_TREE)
>>> precommit = tt1.write()
>>> sig1 = Signature('Tester', 'test@example.com', int(time()), 0)
>>> commit = repo.create_commit('refs/heads/master', sig1, sig1, 'Test commit with pygit2', precommit, [])

$ git clone /tmp/repodir
Cloning into 'repodir'...
done.
$ cd repodir/
$ git log
commit 063edbc00053984c36a22e1cee58e139aba19f21
Author: Tester <test@example.com>
Date:   Thu Jul 18 04:16:30 2013 +0000

    Test commit with pygit2
$ ls
test_file1.txt  test_file2.txt  tt2
$ find tt2
tt2
tt2/tt3
tt2/tt3/tt4
tt2/tt3/tt4/tt5
tt2/tt3/tt4/tt5/all_the_way_down.txt

Thank you for posting this! Helpful in my issue: https://stackoverflow.com/questions/70842646/how-to-make-an-initial-commit-using-pygit2/70842647#70842647