[yocto] Unable to fetch the linux-yocto-3.14.24

[andre seame]

It is my first compilation of the Yocto system. Yesterday, I did git clone http://git.yoctoproject.org/git/poky, according
the "http://www.yoctoproject.org/docs/1.7.1/yocto-project-qs/yocto-project-qs.html". 

I try : bitbake -k core-image-sato
It seems that there is for each packages a sequence : 
fetch (download form internet)
configure
compilation

This mechanism works for a lot of package, but fails for the kernel. 

So I try another build with : bitbake -k core-image-rt 
1: linux-yocto-3.14.24+gitAUTOINC+a227f20eff_38cd560d50-r0 do_fetch (pid 10032)
2: linux-yocto-rt-3.14.24+gitAUTOINC+a227f20eff_7f0712d102-r0 do_fetch (pid 10033)

So in all cases, my system seems to fail or is very very slow to downlaod the sources of linux yocto (more 10 hours !). 

Build Configuration:
BB_VERSION        = "1.24.0"
BUILD_SYS         = "x86_64-linux"
NATIVELSBSTRING   = "CentOS-Linux-7.0.1406"
TARGET_SYS        = "i586-poky-linux"
MACHINE           = "qemux86"
DISTRO            = "poky"
DISTRO_VERSION    = "1.7.1"
TUNE_FEATURES     = "m32 i586"
TARGET_FPU        = ""

Have you idea ? Is the name of the package linux-yocto + git + a22  a legal value ? 
It seems that my question is reccurrent, but I don't see a solution. 
Is it possible to see where my system try to donwload  the liunx yocto package ? 

Thanks, 
PHL. 
 		 	   		  
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