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Ivan

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For example, take the following commits on master:


This is not an error message and is nothing to be worried about. This is simply a notice that you are not attached to an actual branch.


state without impacting any branches by performing another checkout.


You are in 'detached HEAD' state. You can look around, make experimental changes and commit them, and you can discard any commits you make


What is a "detached head"?


See also What is local history/shared history?


everybody you need to in order to make sure important changes are pushed before a history modification.


Problems occur because you can rarely be sure you’ve communicated with


changing history is very problematic and should only be done in extreme cases where the cost is understood.


On mainline branches that anyone could base off of for any arbitrary work (eg “master” or “develop”),


This is also usually not a problem if you expect branches to be short lived and highly collaborative (assuming high communication).


On shared feature branches, the burden of communication increases to the people who are developing with you on that branch.


number of people you need to communicate with is usually limited to just you.


Rewriting local history up to the point of shared changes is rarely a problem. The


It is important that changes are resolved before history is rewritten and that usually means waiting for all important work to be pushed.


have already based development off the history that is to be changed.


Rewriting history has a number of legitimate uses but requires communication proportional to the number of people who


the same changes now look to be two different changes at different times.


the SHAs have changed and commits that should refer to


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