How do I revert to a previous git in R studio?

Question

I know similar issues have been addressed in a bunch posts, but I couldn't figure out how to solve this issue anyway.

So, I have synchronized my local directory with this git repo

Dario (master *) replicationKumar $ git remote -v
origin  [email protected]:DarioBoh/replicationKumar.git (fetch)
origin  [email protected]:DarioBoh/replicationKumar.git (push)

I successfully pushed a few commits, so I am pretty confident I have synchronized everything correctly. Also, I ran

Dario (master *) replicationKumar $ git pull origin master
From github.com:DarioBoh/replicationKumar
 * branch            master     -> FETCH_HEAD
Already up-to-date.

which shows that I should be working on a copy of what I have on github. Since the last commit, I deleted a few files though, and now I would like to recover all them from the remote directory from this commit

Dario (master *) replicationKumar $ git log
commit 91a3dfdb30084654a7a5517250d2a70dfddb931b
Author: DarioBoh <[email protected]>
Date:   Tue Jul 19 10:00:12 2016 -0500

    REFACTOR linechart moved from server to chart.R

In fact, the local directory currently looks like this

Dario (master *) replicationKumar $ ls -a
.           .RData          .Rproj.user     .gitignore
..          .Rhistory       .git            replicationKumar.Rproj

I thought checkout was gonna do the job and I did

Dario (master *) replicationKumar $ git checkout 91a3dfdb30084654a7a5517250d2a70dfddb931b
D   charts.R
D   datasets.R
D   server.R
D   sidebarMenu.R
D   ui.R
D   ui1.R
D   ui2.R
Note: checking out '91a3dfdb30084654a7a5517250d2a70dfddb931b'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

  git checkout -b <new-branch-name>

HEAD is now at 91a3dfd... REFACTOR linechart moved from server to chart.R

However, my local directory does not show the files present in the checked out commit as I would expect

Dario ((91a3dfd...) *) replicationKumar $ ls -a
.           .Rhistory       .gitignore
..          .Rproj.user     FETCH_HEAD
.RData          .git            replicationKumar.Rproj

Answer 1

If you wish to only revert those files, and to do so on the master branch, then you should:

• Check out the master branch
• Check out only those file(s) from the previous commit
• Stage the changes (the reverted files)
• Make a new commit

This will look something like the following:

git checkout master
git checkout [commit hash] [path/to/file.txt]
...
git add .
git status (does everything look right?)
git commit

This will add a new commit to master which reverts the files to their state from the specified old commit. Afterwards you will probably want to run another git push.