You can clone with HTTPS or SSH.
wget --debug "http://mirrors.jenkins-ci.org/war/latest/jenkins.war" DEBUG output created by Wget 1.11.4 on solaris2.11. --2011-02-14 11:53:29-- http://mirrors.jenkins-ci.org/war/latest/jenkins.war Resolving mirrors.jenkins-ci.org... 63.246.20.93 Caching mirrors.jenkins-ci.org => 63.246.20.93 Connecting to mirrors.jenkins-ci.org|63.246.20.93|:80... connected. Created socket 4. Releasing 0x080a2f98 (new refcount 1). ---request begin--- GET /war/latest/jenkins.war HTTP/1.0 User-Agent: Wget/1.11.4 Accept: */* Host: mirrors.jenkins-ci.org Connection: Keep-Alive ---request end--- HTTP request sent, awaiting response... ---response begin--- HTTP/1.1 302 Found Date: Mon, 14 Feb 2011 04:53:49 GMT Server: Apache/2.2.12 (Ubuntu) X-Mirrorbrain-Mirror: ftp-chi.osuosl.org X-Mirrorbrain-Realm: other Location: http://ftp-chi.osuosl.org/pub/jenkins/war/1.397/jenkins.war Vary: Accept-Encoding Content-Length: 331 Content-Type: text/html; charset=iso-8859-1 Set-Cookie: SERVERID=Local; path=/ Connection: close ---response end--- 302 Found Stored cookie mirrors.jenkins-ci.org -1 (ANY) / <session> <insecure> [expiry none] SERVERID Local Location: http://ftp-chi.osuosl.org/pub/jenkins/war/1.397/jenkins.war [following] Closed fd 4 --2011-02-14 11:53:31-- http://ftp-chi.osuosl.org/pub/jenkins/war/1.397/jenkins.war Resolving ftp-chi.osuosl.org... 64.50.236.52 Caching ftp-chi.osuosl.org => 64.50.236.52 Connecting to ftp-chi.osuosl.org|64.50.236.52|:80... connected. Created socket 4. Releasing 0x080a3018 (new refcount 1). ---request begin--- GET /pub/jenkins/war/1.397/jenkins.war HTTP/1.0 User-Agent: Wget/1.11.4 Accept: */* Host: ftp-chi.osuosl.org Connection: Keep-Alive ---request end--- HTTP request sent, awaiting response... ---response begin--- HTTP/1.1 200 OK Date: Mon, 14 Feb 2011 04:53:50 GMT Server: Apache Last-Modified: Sat, 12 Feb 2011 21:02:47 GMT ETag: "5e2f4d-22fc30c-49c1c22ff0bc0" Accept-Ranges: bytes Content-Length: 36684556 Keep-Alive: timeout=2, max=100 Content-Type: text/plain Connection: keep-alive ---response end--- 200 OK Registered socket 4 for persistent reuse. Length: 36684556 (35M) [text/plain] Saving to: `jenkins.war'