robocopy <source> <target> /MIR /sec /XD "<exclude folder>" /MT /NP /DCOPY:T /COPY:DT
/COPY:copyflag[s] :: what to COPY for files (default is /COPY:DAT).
(copyflags : D=Data, A=Attributes, T=Timestamps).
(S=Security=NTFS ACLs, O=Owner info, U=aUditing info).
/DCOPY:T :: COPY Directory Timestamps.