$ git clone -n https://github.com/xcp-ng-rpms/intel-igb-alt.git /var/lib/mock/v8.1-base-2011-1366/root/chroot_tmpdir/scmroot/intel-igb-alt
Cloning into '/var/lib/mock/v8.1-base-2011-1366/root/chroot_tmpdir/scmroot/intel-igb-alt'...
$ git reset --hard f2b0d90e9b5b60be268f1f5ccfbcb62ffa6df2c6
Downloading SOURCES/igb-5.3.5.39.tar.gz (345 KB)
HEAD is now at f2b0d90 Rebuild for XCP-ng 8.1