[SyncAnalysisState] Preserve synctime µs

By default, datetime.isoformat() uses different format depending on
microseconds - if is equal to 0, microseconds are omitted, but otherwise
not.

Setting timespec = 'microseconds' ensures the format is the same
regardless of current time.

Change-Id: Icb1be31eb681247c7e46923cdeabb8f5469c20f0
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/371694
Tested-by: Josip Sokcevic <sokcevic@google.com>
Reviewed-by: Joanna Wang <jojwang@google.com>
Commit-Queue: Josip Sokcevic <sokcevic@google.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/git_config.py b/git_config.py
index 05b3c1ee..87ed9765 100644
--- a/git_config.py
+++ b/git_config.py
@@ -792,7 +792,7 @@ class SyncAnalysisState:
         """
         self._config = config
         now = datetime.datetime.utcnow()
-        self._Set("main.synctime", now.isoformat() + "Z")
+        self._Set("main.synctime", now.isoformat(timespec="microseconds") + "Z")
         self._Set("main.version", "1")
         self._Set("sys.argv", sys.argv)
         for key, value in superproject_logging_data.items():