$ git clone -n https://github.com/xcp-ng-rpms/intel-igb-alt.git /var/lib/mock/v8.1-base-2008-1366/root/chroot_tmpdir/scmroot/intel-igb-alt
Cloning into '/var/lib/mock/v8.1-base-2008-1366/root/chroot_tmpdir/scmroot/intel-igb-alt'...
$ git reset --hard f2b0d90e9b5b60be268f1f5ccfbcb62ffa6df2c6
fatal: Could not parse object 'f2b0d90e9b5b60be268f1f5ccfbcb62ffa6df2c6'.