github - fetch git repo at specific commit without cloning -

i trying git repo @ specific commit hash without cloning! every example wants clone whole repo. makes sense repo have in mind huge , need leave small footprint going docker image.

the commit hash in url - either wget or curl could/should recursively fetch have feeling github blocking ever robots.txt

the repo , commit:

https://github.com/phalcon/cphalcon/tree/1d6d21c98026b5de79ba5e75a3930ce7d1ebcd2e

my best attempt error:

git fetch https://github.com/phalcon/cphalcon/ 1d6d21c98026b5de79ba5e75a3930ce7d1ebcd2e error: server not allow request unadvertised object 1d6d21c98026b5de79ba5e75a3930ce7d1ebcd2e 

update

suggestions of answers use clone aren't answering question. can clone/checkout no problem. trying without having whole repo locally

you need git repository, reason shown in error message:

error: server not allow request unadvertised object ... 

an "unadvertised object" 1 not have name directly attached it. (if object had name, ask named thing, , server give object. assumes complaint "i don't allow blue cats here" implies "i allow other colors of cats", isn't true either, it's kind of reasonable assumption.¹) means must obtain object indirect means, i.e., using git fetch.

the repository need is, definition, clone—or @ least partial clone—of original repository. can use shallow clone, 1 incomplete. precisely depth necessary cannot compute in advance: has full clone figure out, , once have deep enough clone, can find exact number. if clone shallow, know clone shallow.

see git fetch specific commit hash , git shallow clone (clone --depth) misses remote branches. note may or may not want --single-branch. clone depth , see if it's enough, , if not, raise depth git fetch --depth <bigger-number> until enough.

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¹in fact, logic appears true origin phrase "the exception proves rule": comes latin phrase exceptio probat regulam in casibus non exceptis. see https://pocketbookuk.com/tag/cicero/ , this answer on english.stackexchange.com more on this.