Git creation time

$ cd git-repo
$ git log --diff-filter=A --follow --format=%aI --reverse -- <my_file>

$dir=FileNameJoin[{$mengWolframAlphaDevWorkspaceDirectory,"AlphaSource","CalculateParse","Content"}]

Composition[
SortBy[#,Last]&,
(StringReplace[#,$dir-> ""]-> ReadList["!git log --diff-filter=A --follow --format=%aI --reverse -- "<>#,String])&/@#&,
(*RandomSample[#,2]&,*)
FileNames["*.m",{#},1]&
][$dir]