So... the thing is I never had a master because of various reasons, I had an accident after the first release, so the guy who continued my work did quite a mess with the repo. Later on, without having the time to fix it I keep working on the develop branch, simply tagging the "release versions". So now I'm really in need of a master branch.

How can I do that? This is what I have:

Develop:  A - B - C - - -  D - H -I
              |\          /|
FeatureX:     | E - F - G  |
              |            |
TAGS          R1           R2

And what I would like to do is to have something like this:

Master         J - - - - - - K
              /            /
Develop:  A - B - C - - -  D - H -I
              |\          /|
FeatureX:     | E - F - G  |
              |            |
TAGS          R1           R2

Is it possible? Or should I start a new one and cherry pick all the commits by hand...

Update:

I get is something like this on gitkraken:

Master          - - - - - - - - - - - J - K
               /            - - - - - - - /
              /            /
Develop:  A - B - C - - -  D - H -I
              |\          /|
FeatureX:     | E - F - G  |
              |            |
TAGS          R1           R2

Even after editing J with the same date as B or K as D