>>> linux-firmware 44d4fca9922a252a0bd81f6307bcc072a78da54a Downloading
Reinitialized existing Git repository in /home/buildroot/build/instance-0/dl/linux-firmware/git/.git/
Fetching all references
Could not fetch special ref '44d4fca9922a252a0bd81f6307bcc072a78da54a'; assuming it is not special.
warning: refname '44d4fca9922a252a0bd81f6307bcc072a78da54a' is ambiguous.
Git normally never creates a ref that ends with 40 hex characters
because it will be ignored when you just specify 40-hex. These refs
may be created by mistake. For example,

  git checkout -b $br $(git rev-parse ...)

where "$br" is somehow empty and a 40-hex ref is created. Please
examine these refs and maybe delete them. Turn this message off by
running "git config advice.objectNameWarning false"
ERROR: linux-firmware-44d4fca9922a252a0bd81f6307bcc072a78da54a.tar.gz has wrong sha256 hash:
ERROR: expected: 8f419b5d0c65d0f861a2cfc634f30e7952135de71a3ebe6b7afbda091f5a94ba
ERROR: got     : b279ca4d086887c2efab13e28a7ca36e409410d3df38a62d7c7b5799ee3de916
ERROR: Incomplete download, or man-in-the-middle (MITM) attack
converted 'http://sources.buildroot.net/linux-firmware/linux-firmware-44d4fca9922a252a0bd81f6307bcc072a78da54a.tar.gz' (ANSI_X3.4-1968) -> 'http://sources.buildroot.net/linux-firmware/linux-firmware-44d4fca9922a252a0bd81f6307bcc072a78da54a.tar.gz' (UTF-8)
--2018-09-28 15:31:48--  http://sources.buildroot.net/linux-firmware/linux-firmware-44d4fca9922a252a0bd81f6307bcc072a78da54a.tar.gz
Resolving sources.buildroot.net (sources.buildroot.net)... 2400:cb00:2048:1::6819:d213, 2400:cb00:2048:1::6819:d313, 104.25.210.19, ...
Connecting to sources.buildroot.net (sources.buildroot.net)|2400:cb00:2048:1::6819:d213|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2018-09-28 15:31:49 ERROR 404: Not Found.

converted 'http://sources.buildroot.net/linux-firmware-44d4fca9922a252a0bd81f6307bcc072a78da54a.tar.gz' (ANSI_X3.4-1968) -> 'http://sources.buildroot.net/linux-firmware-44d4fca9922a252a0bd81f6307bcc072a78da54a.tar.gz' (UTF-8)
--2018-09-28 15:31:49--  http://sources.buildroot.net/linux-firmware-44d4fca9922a252a0bd81f6307bcc072a78da54a.tar.gz
Resolving sources.buildroot.net (sources.buildroot.net)... 2400:cb00:2048:1::6819:d313, 2400:cb00:2048:1::6819:d213, 104.25.210.19, ...
Connecting to sources.buildroot.net (sources.buildroot.net)|2400:cb00:2048:1::6819:d313|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2018-09-28 15:31:49 ERROR 404: Not Found.

package/pkg-generic.mk:135: recipe for target '/home/buildroot/build/instance-0/output/build/linux-firmware-44d4fca9922a252a0bd81f6307bcc072a78da54a/.stamp_downloaded' failed
make: *** [/home/buildroot/build/instance-0/output/build/linux-firmware-44d4fca9922a252a0bd81f6307bcc072a78da54a/.stamp_downloaded] Error 1
make: Leaving directory '/home/buildroot/build/instance-0/buildroot'