根据http://wiki.t-firefly.com/zh_CN/Firefly-RK3399/buildroot_compile.html 这个，按步骤操作。
编译buildroot的时候报错，找不到http://sources.buildroot.net/linux-HEAD.tar.gz 这个链接。
完整LOG如下：
GEN /home/chensenbin/workspace/aio_3399c/Firefly_Linux_SDK_v1.0/buildroot/output/rockchip_rk3399/Makefile
linux HEAD Downloading
Doing shallow clone
Cloning into ‘linux-HEAD’…
fatal: ‘/home/chensenbin/workspace/aio_3399c/Firefly_Linux_SDK_v1.0/buildroot/../kernel’ does not appear to be a git repository
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
Shallow clone failed, falling back to doing a full clone
Doing full clone
Cloning into ‘linux-HEAD’…
fatal: ‘/home/chensenbin/workspace/aio_3399c/Firefly_Linux_SDK_v1.0/buildroot/../kernel’ does not appear to be a git repository
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
–2020-04-29 18:16:56-- http://sources.buildroot.net/linux-HEAD.tar.gz
Resolving sources.buildroot.net (sources.buildroot.net)… 104.26.1.37, 104.26.0.37, 2606:4700:20::681a:25, …
Connecting to sources.buildroot.net (sources.buildroot.net)|104.26.1.37|:80… connected.
HTTP request sent, awaiting response… 404 Not Found
2020-04-29 18:16:58 ERROR 404: Not Found.
package/pkg-generic.mk:166: recipe for target ‘/home/chensenbin/workspace/aio_3399c/Firefly_Linux_SDK_v1.0/buildroot/output/rockchip_rk3399/build/linux-HEAD/.stamp_downloaded’ failed
make[1]: *** [/home/chensenbin/workspace/aio_3399c/Firefly_Linux_SDK_v1.0/buildroot/output/rockchip_rk3399/build/linux-HEAD/.stamp_downloaded] Error 1
/home/chensenbin/workspace/aio_3399c/Firefly_Linux_SDK_v1.0/buildroot/output/rockchip_rk3399/Makefile:16: recipe for target ‘_all’ failed
make: *** [_all] Error 2
Command exited with non-zero status 1
you take 0:16.01 to build builroot
====Build buildroot failed!====
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
请问如何下到这个包？http://sources.buildroot.net/linux-HEAD.tar.gz