Re: [PATCH v4 4/4] gitfaq: fetching and pulling a repository

From: Shourya Shukla <shouryashukla.oo@gmail.com>
Date: May 2, 2020, 06:57 UTC
Message-ID: <20200502065745.GD5582@konoha>
In-Reply-To: <CABPp-BFt_5-OyOw9YbYJhhu1P4CJLOi65wdyRckOY5_acRejGg@mail.gmail.com>

On 29/04 08:56, Elijah Newren wrote:

Show 13 quoted lines

> > +[[fetching-and-pulling]]
> > +How do I know if I want to do a fetch or a pull?::
> > +       A fetch brings in the latest changes made upstream (i.e., the
> > +       remote repository we are working on). This allows us to inspect
> > +       the changes made upstream and integrate all those changes (if
> > +       and only if we want to) or only cherry pick certain changes.
> > +       Fetching does not have any immediate effects on the local
> > +       repository.
> 
> Maybe change that last sentence to "Fetching does not modify the
> current branch"?  The local repository certainly gets bigger, and the
> remote tracking branches are updated as well as their reflogs, and it
> might trigger a gc, all of which sound like immediate effects to me.

I meant changes in terms of the user's code. Yep you are right, I need to be precise here.

Show 16 quoted lines

> > +
> > +       A pull is a wrapper for a fetch and merge. This means that doing
> 
> ...for a fetch and merge or a fetch and rebase.  This means...
> 
> > +       a `git pull` will not only fetch the changes made upstream but
> > +       integrate them as well with our local repository. The merge may
> 
> ...with our current branch.  The merge or rebase...
> 
> > +       go smoothly or have merge conflicts depending on the case. A pull
> > +       does not allow you to review any changes made upstream but rather
> > +       merge those changes on their own.
> 
> I don't understand this last sentence.  You can definitely review
> changes made upstream after a pull; e.g. git log @{u}@{1}..@{u}

I meant that the pull will apply the changes right away and one does not get the chance to review what is being applied before it has been applied (something a fetch does). I need to be more clear here, understood.

Show 6 quoted lines

> > ++
> > +This is the reason why it is sometimes advised to fetch the changes
> > +first and then merge them accordingly because not every change might
> > +be of utility to the user.
> 
> I don't understand the purpose of this paragraph.

I intended to emphasise the difference between a fetch and a pull; the fact that fetch just brings in the changes from the remote and doesnot apply them to our code/files right away, while a pull does so.

Also, a nit but, we are supposed to use 1 SP or 2 SP after a full stop(.)? In India we use 1 SP, is it different in other countries?