tree 8ace5594271ad4cf86e111355861585bc9f88889
parent 3a6e25af7537181aae251951b8aabe7748c3aee5
author kimhappy <hwanhee.kim@laplacian.cc> 1787767455 +0900
committer gerrit-scoped@luci-project-accounts.iam.gserviceaccount.com <gerrit-scoped@luci-project-accounts.iam.gserviceaccount.com> 1787872969 -0700

sync: fetch submodules after their parent repository

Phased sync fetches every project at once, so a submodule is fetched at
the gitlink that was read before its parent was fetched. With -c that
stale revision is already present, the fetch is skipped as an immutable
revision, and the checkout then fails on the revision the reloaded
manifest resolved:

  error: Cannot checkout a/b
  fatal: bad object 5556dad99da5df7e53303c5732aacc8782493e03

Fetch in batches, holding a submodule back until the project holding its
gitlink is fetched, and read the gitlinks again between batches. A
manifest without submodules keeps its single batch.

Bug: 550074864
Change-Id: I04c2eb1ca81ab25b4df2c03c5dc048d2e4ecdcb8
Signed-off-by: kimhappy <hwanhee.kim@laplacian.cc>
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/621663
Reviewed-by: Gavin Mak <gavinmak@google.com>
Reviewed-by: Brian Gan <brgan@google.com>