Remove branches and Releases

gistfile1.txt

https://help.github.com/en/articles/splitting-a-subfolder-out-into-a-new-repository

https://help.github.com/en/articles/duplicating-a-repository

$ git clone --bare https://github.com/exampleuser/old-repository.git

Create a new repository

$ cd old-repository.git
$ git push --mirror https://github.com/trilogy-group/aurea-aes-edi-test-automation.git

# Very important - Now clone the repo again so that you don't mess with existing repo. 

## Ref - https://ben.lobaugh.net/blog/201616/cleanup-and-remove-all-merged-local-and-remote-git-branches

# Make the branch as default whichever you think is correct and has all the artifacts mostly develop, in rare case master

for remote in `git branch -r `; do git branch --track $remote; done

git checkout develop

git tag | xargs -L 1 | xargs git push origin --delete

git branch --merged master | grep -v master | cut -d/ -f2- | xargs -n 1 git push --delete origin



## Ref - https://stackoverflow.com/questions/19542301/delete-all-tags-from-a-git-repository/34395864#34395864
It may be more efficient to push delete all the tags in one command. Especially if you have several hundred.

In a suitable non-windows shell, delete all remote tags:

git tag | xargs -L 1 | xargs git push origin --delete
Then delete all local tags:

git tag | xargs -L 1 | xargs git tag --delete
This should be OK as long as you don't have a ' in your tag names. For that, the following commands should be OK.

git tag | xargs -I{} echo '"{}"' | tr \\n \\0 | xargs --null git push origin --delete
git tag | xargs -I{} echo '"{}"' | tr \\n \\0 | xargs --null git tag --delete

To fetch the latest references -

git fetch --prune


To put it simple, if you are trying to do something like git fetch -p -t, it will not work starting with git version 1.9.4.

However, there is a simple workaround that still works in latest versions:

  $ git tag -l | xargs git tag -d # remove all local tags
  $ git fetch -t                  # fetch remote tags
A one liner can be written as:

  $ git tag -l | xargs git tag -d && git fetch -t
  
  
https://silentinfotech.com/blog/remove-deleted-files-from-git-repository-history/

Shrink the repository
We used git-filter-branch to get rid of files from commits. People expect the resulting repository to be smaller than the original, but you need a few more steps to actually make it smaller because Git tries hard not to lose your objects until you tell it to.

Remove the original refs backed up by git-filter-branch (do this for all branches):
git update-ref -d refs/original/refs/heads/master
Expire all reflogs with:
git reflog expire --expire=now --all
Garbage collect all unreferenced objects with
git gc --prune=now
You are ready to push now.

git push
Push your updated tree on the git repository. Make sure you have enough rights to do so.

git push -f