git symbolic-ref HEAD

$ git config --get remote.origin.url
<url>

$ git ls-remote <url>

$ git ls-remote git://github.com/git/git
b7bd9486b055c3f967a870311e704e3bb0654e4f        HEAD
53f9a3e157dbbc901a02ac2c73346d375e24978c        refs/heads/maint
b7bd9486b055c3f967a870311e704e3bb0654e4f        refs/heads/master
5c9ce644c390ec4ef3ba4adc94e7f4af17ade36b        refs/heads/next
1aaaa8cf15ba4eb62d485c5c8b64d6a75b9e7c3f        refs/heads/pu
f59de5ad04b18866024fb298ddb276cb51d91673        refs/heads/todo
[lots of text snipped]
8d091e9ed473c372a5b89d1258d1c3ad01daa04c        refs/tags/v2.9.4
d61226c1118f749280c050555d83560ca0f3bf71        refs/tags/v2.9.4^{}
dcba104ffdcf2f27bc5058d8321e7a6c2fe8f27e        refs/tags/v2.9.5
4d4165b80d6b91a255e2847583bd4df98b5d54e1        refs/tags/v2.9.5^{}

refs/remotes/origin/maint
refs/remotes/origin/master

$ git config --get remote.origin.fetch

+refs/heads/*:refs/remotes/origin/*