This looks like github configuration. My (probably newer) git tells me:
$ git fetch --depth=1 origin 6e5cdacfa6ac018c6ef42aa9679893676f293f21
error: Server does not allow request for unadvertised object 6e5cdacfa6ac018c6ef42aa9679893676f293f21
Note that this works fine and has the same effect:
$ git fetch --depth=1 origin phobos-0.2
If you want the first command to work, you will probably have to host somewhere other than github.
> Please be honest: did you see it work at least once?
No, I never tried this before. I was just guessing based on the client error message. But a quick look in the source reveals that this is indeed a server setting that defaults to false:
If fetching non-tagged, non-branchhead commits is actually a frequent use case for you, you could ask github whether they might change their config. You are not the first person to want this: https://github.com/isaacs/github/issues/436
> It seems we're back to square one.
Almost :). You said:
> Bazaars allows remotely fetching one single revision from a repo, without requiring to download the whole history. You can't do this with git.
As it turns out that is not correct – git can absolutely do that. But the two biggest hosters don't allow it.
"However, note that calculating object reachability is computationally expensive. Defaults to false."
"it is off by default and generally advised against on performance reasons."
> > Bazaars allows remotely fetching one single revision from a repo, without requiring to download the whole history. You can't do this with git.
> As it turns out that is not correct – git can absolutely do that. But the two biggest hosters don't allow it.
I stand corrected, I should have written instead: "git designs makes this operation so expensive that git disables it by default, which means you can't use it with github and gitlab, and probably the vast majority of git servers in the world, making it unusable in practice".
> you could ask github whether they might change their config.
