Github API v3 regression: unable to get commits by partial SHA

gistfile1.txt

~ » curl -iI https://api.github.com/repos/django/django/git/commits/bbb12581dbd91945857cb4731368671776d4d388      ~  
HTTP/1.1 200 OK
Server: nginx/1.0.13
Date: Mon, 14 May 2012 06:37:00 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
Status: 200 OK
X-RateLimit-Limit: 5000
ETag: "d41d8cd98f00b204e9800998ecf8427e"
X-RateLimit-Remaining: 4990
Content-Length: 905

~ » curl -iI https://api.github.com/repos/django/django/git/commits/bbb1258                                       ~  
HTTP/1.1 404 Not Found
Server: nginx/1.0.13
Date: Mon, 14 May 2012 06:37:30 GMT
Content-Type: application/json; charset=utf-8
Connection: keep-alive
Status: 404 Not Found
X-RateLimit-Limit: 5000
ETag: "d41d8cd98f00b204e9800998ecf8427e"
X-RateLimit-Remaining: 4989
Content-Length: 29

~ » curl -iI http://github.com/api/v2/json/commits/show/django/django/bbb1258                                     ~  
HTTP/1.1 200 OK
Server: nginx/1.0.13
Date: Mon, 14 May 2012 06:37:39 GMT
Content-Type: application/json; charset=utf-8
Connection: close
Status: 200 OK
X-RateLimit-Limit: 60
ETag: "f80042e9e883c60435f58915765653f4"
X-Frame-Options: deny
X-RateLimit-Remaining: 58
X-Runtime: 27
Content-Length: 5562
Cache-Control: private, max-age=0, must-revalidate

Do you know if this issue was resolved? Or presumably there is now another way to lookup full shas from partial shas via the Github API?