Git does not store copy information explicitly, so you do not need to specify how you import it to detect it when you do the log command if you want. On the git-log man page:
-C[<n>] --find-copies[=<n>] Detect copies as well as renames. See also --find-copies-harder. If n is specified, it has the same meaning as for -M<n>. --find-copies-harder For performance reasons, by default, -C option finds copies only if the original file of the copy was modified in the same changeset. This flag makes the command inspect unmodified files as candidates for the source of copy. This is a very expensive operation for large projects, so use it with caution. Giving more than one -C option has the same effect.
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