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init: change --manifest-depth default to 1

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Most users do not care about the manifest history in .repo/manifests/.
Let's change the default to 1 so things work smoothly for most people
most of the time.  For the rare folks who want the full history, they
can add --manifest-depth=0 to their `repo init`.

This has no effect on existing checkouts.

Spot checking Android & CrOS manifests shows significant speedups.
Full history can take O(10's seconds) to O(minutes) while depth of 1
takes constant time of O(~5 seconds).

Bug: 468033850
Change-Id: I4b8ed62a8a636babcc5226552badb69600d0c353
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/535481
Tested-by: Mike Frysinger <vapier@google.com>
Commit-Queue: Mike Frysinger <vapier@google.com>
Reviewed-by: Gavin Mak <gavinmak@google.com>
This commit is contained in:
Mike Frysinger
2025-12-11 17:24:49 -05:00
committed by LUCI
parent 871e4c7ed1
commit 622a5bf9c2
2 changed files with 4 additions and 4 deletions
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4
man/repo-init.1
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@@ -1,5 +1,5 @@
.\" DO NOT MODIFY THIS FILE! It was generated by help2man.
.TH REPO "1" "September 2024" "repo init" "Repo Manual"
.TH REPO "1" "December 2025" "repo init" "Repo Manual"
.SH NAME
repo \- repo init - manual page for repo init
.SH SYNOPSIS
@@ -53,7 +53,7 @@ create a git checkout of the manifest repo
.TP
\fB\-\-manifest\-depth\fR=\fI\,DEPTH\/\fR
create a shallow clone of the manifest repo with given
depth (0 for full clone); see git clone (default: 0)
depth (0 for full clone); see git clone (default: 1)
.SS Manifest (only) checkout options:
.TP
\fB\-c\fR, \fB\-\-current\-branch\fR

4
repo
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@@ -129,7 +129,7 @@ if not REPO_REV:
BUG_URL = "https://issues.gerritcodereview.com/issues/new?component=1370071"
# increment this whenever we make important changes to this script
VERSION = (2, 54)
VERSION = (2, 61)
# increment this if the MAINTAINER_KEYS block is modified
KEYRING_VERSION = (2, 3)
@@ -325,7 +325,7 @@ def InitParser(parser):
group.add_option(
"--manifest-depth",
type="int",
default=0,
default=1,
metavar="DEPTH",
help="create a shallow clone of the manifest repo with "
"given depth (0 for full clone); see git clone "