$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v7.6-testing-1454-747/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v7.6-testing-1454-747/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard 99b5c54ec09f713487ea67fb9d1763e8e91f4469
Downloading SOURCES/kernel-4.4.52.tar.gz (134 MB)
HEAD is now at 99b5c54 Add BuildRequires: gcc