I have a branch called dmgr2 (development) and I want to pull from the master branch (live site) and incorporate all the changes into my development branch. is there a better way to do this? here is what I had planned on doing, after committing changes:
git checkout dmgr2
git pull origin master
this should pull the live changes into my development branch, or do I have this wrong?
The steps you listed will work, but there's a longer way that gives you more options:
git checkout dmgr2 # gets you "on branch dmgr2"
git fetch origin # gets you up to date with origin
git merge origin/master
The fetch command can be done at any point before the merge, i.e., you can swap the order of the fetch and the checkout, because fetch just goes over to the named remote (origin) and says to it: "gimme everything you have that I don't", i.e., all commits on all branches. They get copied to your repository, but named origin/branch for any branch named branch on the remote.
At this point you can use any viewer (git log, gitk, etc) to see "what they have" that you don't, and vice versa. Sometimes this is only useful for Warm Fuzzy Feelings ("ah, yes, that is in fact what I want") and sometimes it is useful for changing strategies entirely ("whoa, I don't want THAT stuff yet").
Finally, the merge command takes the given commit, which you can name as origin/master, and does whatever it takes to bring in that commit and its ancestors, to whatever branch you are on when you run the merge. You can insert --no-ff or --ff-only to prevent a fast-forward, or merge only if the result is a fast-forward, if you like.
When you use the sequence:
git checkout dmgr2
git pull origin master
the pull command instructs git to run git fetch, and then the moral equivalent of git merge origin/master. So this is almost the same as doing the two steps by hand, but there are some subtle differences that probably are not too concerning to you. (In particular the fetch step run by pull brings over only origin/master, and it does not update the ref in your repo:1 any new commits winds up referred-to only by the special FETCH_HEAD reference.)
If you use the more-explicit git fetch origin (then optionally look around) and then git merge origin/master sequence, you can also bring your own local master up to date with the remote, with only one fetch run across the network:
git fetch origin
git checkout master
git merge --ff-only origin/master
git checkout dmgr2
git merge --no-ff origin/master
for instance.
1This second part has been changed—I say "fixed"—in git 1.8.4, which now updates "remote branch" references opportunistically. (It was, as the release notes say, a deliberate design decision to skip the update, but it turns out that more people prefer that git update it. If you want the old remote-branch SHA-1, it defaults to being saved in, and thus recoverable from, the reflog. This also enables a new git 1.9/2.0 feature for finding upstream rebases.)
Scenario:
I have master updating and my branch updating, I want my branch to keep track of master with rebasing, to keep all history tracked properly, let's call my branch Mybranch
Solution:
git checkout master
git pull --rebase
git checkout Mybranch
git rebase master
git push -f origin Mybranch
(correction to last stage, in courtesy of Tzachi Cohen, using "-f" forces git to "update history" at server)
now branch should be aligned with master and rebased, also with remote updated, so at git log there are no "behind" or "ahead", just need to remove all local conflict *.orig files to keep folder "clean"
git pull origin master --allow-unrelated-histories
You might want to use this if your histories doesnt match and want to merge it anyway..
refer here
If you're on feature-1 branch and you want to pull master -- (maybe to get the latest merged updates/reduce the chance of a merge conflicts), do:
git pull
git merge origin/master
Pulls master into your branch - Does not affect master!
This will pull anything that has gone into master into your branch since the two of you diverged.
It is fine to do this if your branch has already been made public, as it does not rewrite history.
devbranch with agit checkout dev. Thengit pull --rebase origin master. If you are lucky, there will be no conflicts and dev will have the latest changes from master. – jww