git pre-push hook not getting the lines from STDIN

Hello list,

I'm trying to figure out how I can check which branches are used in a git push action while using the pre-push hook. In the man page the following is mentioned:

----<

Information about what is to be pushed is provided on the hook’s standard input with lines of the form:

<local ref> SP <local object name> SP <remote ref> SP <remote object name> LF

For instance, if the command `git push origin master:foreign` were run the hook would receive a line like the following:

   refs/heads/master 67890 refs/heads/foreign 12345

----<

I cannot seem to reproduce this behavior with the push action. Only when pushing to delete a remote branch or pushing to a new branch gets created yields any success. I went as far back as git 2.9.0 (I can't build older versions of git), to no avail. The line in the man page seems to indicate git v1.8.2-rc0 was the first tag to have it (ec55559f).

Could someone verify that what I am seeing is correct behavior or that this is incorrect?

As stated, I experience issues on git v2.9.0, 2.40.1 (Debian) and also directly from source 2.42.0.rc0.26.g6ac35453d6.

Thanks, Wesley

----< a new branch

$ git push origin test:fofofo +.git/hooks/pre-push:5> remote=origin +.git/hooks/pre-push:6> url=git@gitlab.com:gitlabmeme/somerepo.git +.git/hooks/pre-push:8> success=128 +.git/hooks/pre-push:10> z40=0000000000000000000000000000000000000000 +.git/hooks/pre-push:11> IFS=' ' +.git/hooks/pre-push:13> read LOCAL_REF LOCAL_SHA REMOTE_REF REMOTE_SHA +.git/hooks/pre-push:15> echo refs/heads/test refs/heads/test +.git/hooks/pre-push:16> echo 24a3b84a02937df6040fecce2e0620e16c823b36 24a3b84a02937df6040fecce2e0620e16c823b36 +.git/hooks/pre-push:17> echo refs/heads/fofofo refs/heads/fofofo +.git/hooks/pre-push:18> echo 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 +.git/hooks/pre-push:21> [ refs/heads/test '=' 0000000000000000000000000000000000000000 ']' +.git/hooks/pre-push:23> [ refs/heads/test '=' '(delete)' ']' +.git/hooks/pre-push:30> exit 128

----< deletion of a branch on the remote

$ git push origin :development +.git/hooks/pre-push:5> remote=origin +.git/hooks/pre-push:6> url=git@gitlab.com:gitlabmeme/somerepo.git +.git/hooks/pre-push:8> success=128 +.git/hooks/pre-push:10> z40=0000000000000000000000000000000000000000 +.git/hooks/pre-push:11> IFS=' ' +.git/hooks/pre-push:13> read LOCAL_REF LOCAL_SHA REMOTE_REF REMOTE_SHA +.git/hooks/pre-push:15> echo '(delete)' (delete) +.git/hooks/pre-push:16> echo 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 +.git/hooks/pre-push:17> echo refs/heads/development refs/heads/development +.git/hooks/pre-push:18> echo 1762c08fd38c1137bbca27898df7c64ad846f877 1762c08fd38c1137bbca27898df7c64ad846f877 +.git/hooks/pre-push:21> [ '(delete)' '=' 0000000000000000000000000000000000000000 ']' +.git/hooks/pre-push:23> [ '(delete)' '=' '(delete)' ']' +.git/hooks/pre-push:23> exit 128

----<

If I push to an existing repo on my remote I see this: $ git push origin HEAD:development +.git/hooks/pre-push:5> remote=origin +.git/hooks/pre-push:6> url=git@gitlab.com:gitlabmeme/somerepo.git +.git/hooks/pre-push:8> success=128 +.git/hooks/pre-push:10> z40=0000000000000000000000000000000000000000 +.git/hooks/pre-push:11> IFS=' ' +.git/hooks/pre-push:13> read LOCAL_REF LOCAL_SHA REMOTE_REF REMOTE_SHA +.git/hooks/pre-push:15> echo

+.git/hooks/pre-push:16> echo

+.git/hooks/pre-push:17> echo

+.git/hooks/pre-push:18> echo

+.git/hooks/pre-push:21> [ '' '=' 0000000000000000000000000000000000000000 ']' +.git/hooks/pre-push:23> [ '' '=' '(delete)' ']' +.git/hooks/pre-push:28> exit 128

----< The pre-push script

#!/usr/bin/env zsh # set -x

remote="$1" url="$2"

success=128

z40=0000000000000000000000000000000000000000 IFS=' '

read LOCAL_REF LOCAL_SHA REMOTE_REF REMOTE_SHA

echo $LOCAL_REF echo $LOCAL_SHA echo $REMOTE_REF echo $REMOTE_SHA

# deletion of remote branch [ "$LOCAL_REF" = $z40 ] && exit $success # git 2.40 at least does not have $z40 as a delete [ "$LOCAL_REF" = '(delete)' ] && exit $success

exit $success