bitbake: fetch2/git: stop generated tarballs from leaking info

When using BB_GENERATE_MIRROR_TARBALLS="1" to generate mirror tarballs
of git repositories, they leaked local information: username, group and
time of the last fetch. Remove all these by setting fixed information:

 * uname = pokybuild
 * gname = users
 * mtime = committer time of newest commit in repo

The username and group value were taken from the archives available on
the downloads.yoctoproject.org mirror. The modification time is chosen
so it still retains some relationship to the contents of the archive.

(Bitbake rev: 0178ab83e6312e97e528aa8c5e12105f5165d896)

Signed-off-by: Olaf Mandel <o.mandel@menlosystems.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/bitbake/lib/bb/fetch2/git.py b/bitbake/lib/bb/fetch2/git.py
index b3c5e6dacc..4d06a57198 100644
--- a/bitbake/lib/bb/fetch2/git.py
+++ b/bitbake/lib/bb/fetch2/git.py
@@ -462,7 +462,10 @@ class Git(FetchMethod):
 
             logger.info("Creating tarball of git repository")
             with create_atomic(ud.fullmirror) as tfile:
-                runfetchcmd("tar -czf %s ." % tfile, d, workdir=ud.clonedir)
+                mtime = runfetchcmd("git log --all -1 --format=%cD", d,
+                        quiet=True, workdir=ud.clonedir)
+                runfetchcmd("tar -czf %s --owner pokybuild --group users --mtime \"%s\" ."
+                        % (tfile, mtime), d, workdir=ud.clonedir)
             runfetchcmd("touch %s.done" % ud.fullmirror, d)
 
     def clone_shallow_local(self, ud, dest, d):