mac上經過xcode安裝git

以前安裝過xcode，當時裝了雙系統，後來機子內存不夠就把xcode刪了，從新裝回去後git就沒用了，terminal中輸入git報錯以下：git xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/Comman

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