By running it, it will search for an existing wine-tree... if there is one, it will be cleaned and then updated; if not, the complete tree will be downloaded.
When using -c as parameter for getwinecvs, it will automatically begin to compile after getting all the updates and then install.
To see what it exactly does, have a look at the source.
Even if it is called General CVS-Updater by gladiac it has been written FOR wine. I hope it is helpful for others. I know it's not very nerdy but.... who cares ;).
getwinecvs
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