[U-Boot] git fetch failure

[Christopher Harvey]

Today, I tried to run 

git fetch http://git.denx.de/u-boot.git

but got the following error

error: Unable to find dbf545f2d11cd3118c6c8b54122adfbe799ea1b8 under http://git.denx.de/u-boot.git
Cannot obtain needed blob dbf545f2d11cd3118c6c8b54122adfbe799ea1b8
while processing commit fe0ddffac1ce63de71fe8e6398c4784937b52c84.
error: Fetch failed.

fe0ddffac1ce63de71fe8e6398c4784937b52c84 seems to be the HEAD of the
repository. I'm not totally new to git, but this one has me
stumped. Any ideas?

thanks,
Chris.