# Post-receive hook for "git pull" 3 messages from 2015-12-07 to 2016-02-12. Participants: Stefan Monnier, Junio C Hamano. Thread: https://gitlist.dev/t/40952 ## Stefan Monnier, 2015-12-07 13:47 Subject: Post-receive hook for "git pull" Message-ID: URL: https://gitlist.dev/e/jwv4mful6nu.fsf-monnier%2Bgmane.comp.version-control.git%40gnu.org ``` I have a system here where it can be quite common to have thousands of branches in the remote repository, and where I'd like to update some local state according to the appearance of new branches (or updates of pre-existing ones). Currently, I use a "git for-each-ref" after pulling and then check (for each one of those refs) if an update is warranted, but this can get slow with that many branches. Is there some way to get something like the post-receive hook to be run for "git pull", so that the script gets told directly which (remote tracking) branches have been modified/created? Stefan ``` ## Junio C Hamano, 2015-12-07 19:54 Subject: Re: Post-receive hook for "git pull" Message-ID: URL: https://gitlist.dev/e/xmqqio4am3uk.fsf%40gitster.mtv.corp.google.com In-Reply-To: ``` Stefan Monnier writes: > I have a system here where it can be quite common to have thousands of > branches in the remote repository, and where I'd like to update some > local state according to the appearance of new branches (or updates of > pre-existing ones). > > Currently, I use a "git for-each-ref" after pulling and then check (for > each one of those refs) if an update is warranted, but this can get slow > with that many branches. Is there some way to get something like the > post-receive hook to be run for "git pull", so that the script gets told > directly which (remote tracking) branches have been modified/created? I do not think there is. But you could easily script along the lines of... #!/bin/sh git for-each-ref | sort >prestate git pull "$@" git for-each-ref | sort >poststate comm -12 prestate poststate ... or something like that, no? ``` ## Stefan Monnier, 2016-02-12 13:39 Subject: Re: Post-receive hook for "git pull" Message-ID: URL: https://gitlist.dev/e/jwvlh6qt5i6.fsf-monnier%2Bgmane.comp.version-control.git%40gnu.org In-Reply-To: ``` >> I have a system here where it can be quite common to have thousands of >> branches in the remote repository, and where I'd like to update some >> local state according to the appearance of new branches (or updates of >> pre-existing ones). >> Currently, I use a "git for-each-ref" after pulling and then check (for >> each one of those refs) if an update is warranted, but this can get slow >> with that many branches. Is there some way to get something like the >> post-receive hook to be run for "git pull", so that the script gets told >> directly which (remote tracking) branches have been modified/created? > I do not think there is. But you could easily script along the > lines of... > #!/bin/sh > git for-each-ref | sort >prestate > git pull "$@" > git for-each-ref | sort >poststate > comm -12 prestate poststate Right, it kinda works, but it can break down in case of concurrent operations. I really wish there was a way to get something like the post-receive hook to be called everytime new commits are added, regardless if it's due to a push, a pull, a commit, a fast-import, ... Stefan ```