d16432f246
This patch set adds logic to examine the currently checked out
reference in a repository if ref=None is passed to git.git_handler.
This makes it convenient to simply reuse the revision that is
currently checked out without having to re-supply it. Note that
ref is still a required parameter so providing None will have
to be done explicitly.
Defaults for ref='master' have been changed to ref=None.
Turns out the GitPython library has logic to use the
repo's Git config's fetch refspec by default [0],
which means that by default 'master' will be checked out
for many repositories.
Also adds a ``is_repository`` function to ``git`` module to
more robustly check whether a directory is a repo.
Unit tests and doc strings are updated as well.
[0]
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