git clone combined with --depth, --branch and --single-branch
From: Thibault Kruse <hidden>
Date: 2016-06-15 22:56:10
Hi all,
Using git 1.7.10.4
I find the behavior or documentation of "git clone --single-branch"
confusing. Docs currently say:
man git-clone
--single-branch
Clone only the history leading to the tip of a single
branch, either specified by the --branch option or the primary branch
remote�<80><99>s HEAD points
at. When creating a shallow clone with the --depth option,
this is the default, unless --no-single-branch is given to fetch the
histories near
the tips of all branches.
based onthis documentation, I cannot understand any of the results I
get when combining --depth and --singe-branch.
I start with this repo1 (for how to createin linux, see bottom):
git log --pretty=format:'%h-%s %d' --graph --decorate --all
* 4565162-5 (foo)
* 20ce846-4
* a0615eb-3
* fa4131d-2
* f0683bd-1 (bar)
| * 432b5ec-m1 (HEAD, master)
|/
* 39df203-0
git clone repo1 repo2 --depth 1
cd repo2
git log --pretty=format:'%h-%s %d' --graph --decorate --all
* 432b5ec-m1 (HEAD, origin/master, origin/HEAD, master)
* 39df203-0
# Why are branches "foo" and "bar" missing?
cd ..
git clone repo1 repo3 --depth 1 --branch foo
git log --pretty=format:'%h-%s %d' --graph --decorate --all
* 4565162-5 (HEAD, origin/foo, foo)
* 20ce846-4
* a0615eb-3
* fa4131d-2
* f0683bd-1
| * 432b5ec-m1 (origin/master, origin/HEAD)
|/
* 39df203-0
# Why is --depth not having effect, and why is branch bar not there,
yet master is?
cd ..
git clone repo1 repo4 --depth 1 --branch foo --single-branch
git log --pretty=format:'%h-%s %d' --graph --decorate --all
* 4565162-5 (HEAD, origin/foo, foo)
* 20ce846-4
* a0615eb-3
* fa4131d-2
* f0683bd-1
| * 432b5ec-m1 (origin/master, origin/HEAD)
|/
* 39df203-0
# Why is --depth not having effect, and why is branch master still there?
###################################
# Okay, so --depth seems to generally not work when cloning locally.
So maybe when doing so from github:
git clone https://github.com/git/git --depth 1
cd git
git log --pretty=format:'%h-%s %d' --graph --decorate --all
* 7b6e784-Update draft release notes to 1.8.2 (HEAD, origin/master,
origin/HEAD, master)
* 17e45f8-Merge branch
'wk/man-deny-current-branch-is-default-these-days' (grafted)
git branch -a
* master
remotes/origin/HEAD -> origin/master
remotes/origin/master
git tag# Why don't other branches appear here? # Hm, I'll add "--branch master" to the command git clone https://github.com/git/git git3 --depth 1 --branch master cd git3 git branch -a * master remotes/origin/HEAD -> origin/master remotes/origin/master remotes/origin/next remotes/origin/pu remotes/origin/todo git tag
gitgui-0.10.0 gitgui-0.10.1 gitgui-0.10.2 ...
# And why DO they appear here? Why do I now get all tags? # Same result for --branch next # okay, let's try adding --single-branch git clone https://github.com/git/git git4 --depth 1 --branch next --single-branch cd git4 git branch -a * next remotes/origin/next remotes/origin/pu remotes/origin/todo # Now I don't get master, but I still get those other branches??? And also tags? Now I am aware that a bug was fixed in git 1.8.0: https://raw.github.com/gitster/git/master/Documentation/RelNotes/1.8.0.txt * A repository created with "git clone --single" had its fetch refspecs set up just like a clone without "--single", leading the subsequent "git fetch" to slurp all the other branches, defeating the whole point of specifying "only this branch". But even considering that bug (and assuming it also affected git clone), the results I get for 1.7.10.4 seem all weird, and not really following the documentation. So I am sorry I cannot phrase this as a single question, as the results are not consistent with each other or the documentation, and those results seem to be related. cheers, Thibault Kruse How to create local repo1: mkdir repo1 cd repo1 git init echo 0 >> foo.txt git add foo.txt git commit -m 0 git co master -b bar echo 1 >> bar.txt git add bar.txt git commit -m 1 git co bar -b foo echo 2 >> foo.txt git add foo.txt git commit -m 2 echo 3 >> foo.txt git add foo.txt git commit -m 3 echo 4 >> foo.txt git add foo.txt git commit -m 4 echo 5 >> foo.txt git add foo.txt git commit -m 5 git co master echo 1 > master.txt git add master.txt git commit -m m1