Shawn O. Pearce 336f7bd0ed Avoid git fork on the common case of repo not changing
Usually repo is upgraded only once a week, if that often.  Most of
the time we invoke HasChanges on the repo project (or even on the
manifest project) the current HEAD will resolve to the same SHA-1
as the remote tracking ref, and there are therefore no changes.

Signed-off-by: Shawn O. Pearce <sop@google.com>
2009-04-18 10:39:28 -07:00
2008-10-21 07:00:00 -07:00
2008-10-21 07:00:00 -07:00
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