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The rewrite done while adding the shorthand support made the remote
refname recorded in the commit message too long for human consumption,
while losing information by using the shorthand not the real URL to
name the remote repository there. They were both bad changes done
without enough thinking.
Pointed out by Linus.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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When the "git pull" command updates the branch head you are
currently on, before doing anything else, first update your
index file and the working tree contents to that of the new
branch head. Otherwise, the later resolving steps would think
your index file is attempting to revert the change between the
original head commit and the updated head commit.
It uses two-tree fast-forward form of "read-tree -m -u" to
prevent losing whatever local changes you may have in the
working tree to do this update. I think this would at least
make things safer (a lot safer), and prevent mistakes.
Also "git fetch" command is forbidden from fetching and fast
forwarding the current branch head unless --update-head-ok flag
is given. "git pull" passes the flag when it internally calls
"git fetch".
Signed-off-by: Junio C Hamano <junkio@cox.net>
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"git fetch tag <tag>" stored a tag after dereferencing. Bad.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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With this we could say:
Pull: master:ko-master +pu:ko-pu
to mean "fast forward ko-master with master, overwrite ko-pu with pu",
and the latter one does not require the remote "pu" to be descendant
of local "ko-pu".
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Just like "git push" can forcibly update a ref to a value that is not
a fast-forward, teach "git fetch" to do so as well.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Amos Waterland sent in a patch for the pre-multi-head aware
version of "git pull" to do this, but the code changed quite a
bit since then. If there is no argument given to pull from, and
if "origin" makes sense, default to fetch/pull from "origin"
instead of barfing.
[jc: besides, the patch by Amos broke the non-default case where
explicit refspecs are specified, and did not make sure we know
what "origin" means before defaulting to it.]
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Traditionally, fetch takes these forms:
$ git fetch <remote>
$ git fetch <remote> <head>
$ git fetch <remote> tag <tag>
This patch updates it to take
$ git fetch <remote> <refspec>...
where:
- A <refspec> of form "<src>:<dst>" is to fetch the objects
needed for the remote ref that matches <src>, and if <dst>
is not empty, store it as a local <dst>.
- "tag" followed by <next> is just an old way of saying
"refs/tags/<next>:refs/tags/<next>"; this mimics the
current behaviour of the third form above and means "fetch
that tag and store it under the same name".
- A single token <refspec> without colon is a shorthand for
"<refspec>:" That is, "fetch that ref but do not store
anywhere".
- when there is no <refspec> specified
- if <remote> is the name of a file under $GIT_DIR/remotes/
(i.e. a new-style shorthand), then it is the same as giving
the <refspec>s listed on Pull: line in that file.
- if <remote> is the name of a file under $GIT_DIR/branches/
(i.e. an old-style shorthand, without trailing path), then it
is the same as giving a single <refspec>
"<remote-name>:refs/heads/<remote>" on the command line, where
<remote-name> is the remote branch name (defaults to HEAD, but
can be overridden by .git/branches/<remote> file having the
URL fragment notation). That is, "fetch that branch head and
store it in refs/heads/<remote>".
- otherwise, it is the same as giving a single <refspec>
that is "HEAD:".
The SHA1 object names of fetched refs are stored in FETCH_HEAD,
one name per line, with a comment to describe where it came from.
This is later used by "git resolve" and "git octopus".
Signed-off-by: Junio C Hamano <junkio@cox.net>
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This is a beginning of resurrecting the multi-head pulling support
for git-fetch-pack command. The git-fetch-script wrapper still
only knows about fetching a single head, without renaming, so it is
not very useful unless you directly call git-fetch-pack itself yet.
It also fixes a longstanding obsolete description of how the command
discovers the list of local commits.
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Some http servers return an HTML error page and git reads it as normal
data. Adding -f option makes curl fail silently.
Signed-off-by: Catalin Marinas <catalin.marinas@gmail.com>
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Now git-http-pull knows how to do packed repo, retire scripted
hacks I placed as a stop-gap measure.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Implement fetching from a packed repository over http/https
using the dumb server support files.
I consider some parts of the logic should be in a separate C
program, but it appears to work with my simple tests. I have
backburnered it for a bit too long for my liking, so let's throw
it out in the open and see what happens.
Signed-off-by: Junio C Hamano <junkio@cox.net>
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Cause setting environment variable GIT_SSL_NO_VERIFY to turn off
curl's ssl peer verification.
Only use curl for http transfers, instead of curl and wget.
Make curl check ~/.netrc for credentials.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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We were trying to fetch using the merge-head name rather than the
merge-head SHA1 that we just got.
Now, http:// is broken anyway right now for packing, but this should
make it work for nonpacked repositories again.
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It had the test for the destination reversed.
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Since pull and fetch are done often against the same remote
repository repeatedly, keeping the URL to pull from along with
the name of the head to use in $GIT_DIR/branches/$name makes a
lot of sense. Adopt that convention from Cogito, and try to be
compatible when possible; storing a partial URL and completing
it with a trailing path may not be understood by Cogito.
While we are at it, fix pulling a tag. Earlier, we updated only
refs/tags/$tag without updating FETCH_HEAD, and called
resolve-script using a stale (or absent) FETCH_HEAD.
Signed-off-by: Junio C Hamano <junkio@cox.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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It sets up the normal git environment variables and a few helper
functions (currently just "die()"), and returns ok if it all looks like
a git archive. So use it something like
. git-sh-setup-script || die "Not a git archive"
to make the rest of the git scripts more careful and readable.
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Need to add a final slash. And make it verbose by default, since it's
so slow that otherwise people will think it's died.
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Also, clean it up a lot.
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Use "git fetch <repo> tag <tagname>" to get the named tag and everything
it points to.
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We codify the following different heads (in addition to the main "HEAD",
which points to the current branch, of course):
- FETCH_HEAD
Populated by "git fetch"
- ORIG_HEAD
The old HEAD before a "git pull/resolve" (successful or not)
- LAST_MERGE
The HEAD we're currently merging in "git pull/resolve"
- MERGE_HEAD
The previous head of a unresolved "git pull", which gets committed by
a "git commit" after manually resolving the result
We used to have "MERGE_HEAD" be populated directly by the fetch, and we
removed ORIG_HEAD and LAST_MERGE too aggressively.
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Don't continue with a merge if the fetch failed.
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This allows you to just fetch stuff first, inspect it, and then
resolve the merge separately if everything looks good.
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