Miscellanies about Hexo deployment with purification

• Git switch remote origin

  $ git remote rm origin
  $ git remote add origin <repository>
  $ git config master.remote origin
  $ git config master.merge refs/heads/master

• Git change the commit author

  But the SHA1 code changes after revision.

• Git add submodule reference

  git submodule add <repository<path>

  check .gitmodules for details.

• Git clone submodule references

• Git remove submodule reference

  git submodule deinit <path_to_submodule>
  git rm [-r] [--cached] <path_to_submodule>
  git commit -m "Removed submodule"

  rm -rf .git/modules/

• Git submodule HEAD detached

  Update .gitmodule and specify the branch of submodule to track. Then reload:

  git submodule sync
  git submodule update --init --recursive --remote

  Or re-add the submodule:

  git submodule add -b <branch<repository[<submodule-path>]
  git submodule update --remote

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  git checkout --ours PATH/FILE # accepting base version only
  git checkout --theirs PATH/FILE # accepting incoming version only

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