git-log

Showing HEAD commit logs

Show HEAD commit

$> git log -1
>>> commit = repo[repo.head.target]
>>> commit.message
'commit message'

Traverse commit history

$> git log
>>> last = repo[repo.head.target]
>>> for commit in repo.walk(last.id, pygit2.GIT_SORT_TIME):
>>>     print(commit.message) # or some other operation

References