I want to compile this pull request https://github.com/openwrt/openwrt/pull/1635
I had tried:
/openwrt$ git checkout 1635
error: short SHA1 1635 is ambiguous
hint: The candidates are:
hint: 1635025522 blob
hint: 16350a3875 blob
hint: 16352c713b tree
hint: 16354a5567 tree
hint: 163580af95 blob
hint: 163582f3be tree
hint: 16359943b7 tree
hint: 1635cd5f7c tree
error: pathspec '1635' did not match any file(s) known to git.
What's the right command to checkout a pull request?