git clone changes file modification time

问题

When I clone a git repository using "git clone ..." command all cloned files in my local repository have the same modification time with date and time when git clone command was issued.

Is there a way to clone remote git repository with actual modification time for each file?

回答1:

Git does not record timestamp for the files, since it is a Distributed VCS (meaning the time on your computer can be different from mine: there is no "central" notion of time and date)

The official argument for not recording that metadata is explained in this answer.

But you can find scripts which will attempt to restore a meaningful date, like this one (or a simpler version of the same idea).

回答2:

You can retrieve the last modification date of all files in a git repository. (lat commit time) https://serverfault.com/q/401437/267639

Then use touch command change the modification date.

git ls-tree -r --name-only HEAD | while read filename; do 
  unixtime=$(git log -1 --format="%at" -- "${filename}")
  touchtime=$(date -d @$unixtime +'%Y%m%d%H%M.%S')
  touch -t ${touchtime} "${filename}"
done

Also my gist here.

Oct 2019 Update

Thanks to P. T. for your comment.
I've updated the answer and gist to support filenames with space.

回答3:

This linux one-liner will fix all the files (not folders - just files) - and it will also fix files with spaces in them too:-

git ls-files -z | xargs -0 -n1 -I{} -- git log -1 --format="%ai {}" {} | perl -ne 'chomp;next if(/'"'"'/);($d,$f)=(/(^\d\d\d\d-\d\d-\d\d \d\d:\d\d:\d\d(?: \+\d\d\d\d|)) (.*)/);print "d=$d f=$f\n"; `touch -d "$d" '"'"'$f'"'"'`;' 

回答4:

A shorter variant of @Chris's answer that I find easier to understand:

git ls-files | xargs -I{} git log -1 --date=format:%Y%m%d%H%M.%S --format='touch -t %ad "{}"' "{}" | $SHELL

来源：https://stackoverflow.com/questions/21735435/git-clone-changes-file-modification-time