SHA256 checksum mismatch while installing with brew

[007divyachawla]

brew install git
Warning: You are using OS X 10.13.
We do not provide support for this pre-release version.
You may encounter build failures or other breakages.
Please create pull-requests instead of filing issues.
==> Installing dependencies for git: xz
==> Installing git dependency: xz
==> Downloading https://fossies.org/linux/misc/xz-5.2.2.tar.gz

curl: (22) The requested URL returned error: 410 Gone
Trying a mirror...
==> Downloading http://tukaani.org/xz/xz-5.2.2.tar.gz
==> Downloading from https://sourceforge.net/#!/projects/lzmautils/files/xz-5.2.
######################################################################## 100.0%
Error: SHA256 mismatch
Expected: 73df4d5d34f0468bd57d09f2d8af363e95ed6cc3a4a86129d2f2c366259902a2
Actual: 251a85b3bac687974f360d3796048c20ded3bf0bd69e0d1cfd1db23d013f89ed
Archive: /Users/raghuram.sivalanka/Library/Caches/Homebrew/xz-5.2.2.tar.gz
To retry an incomplete download, remove the file above.

Please suggest the way to remove this error.

[tattali]

this is not about qlmarkdown install but git