$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v8.1-testing-2761-2214/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v8.1-testing-2761-2214/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard 23f4210229aa483681eb7e49c6bfdd4bfc2b01d8
Downloading SOURCES/kernel-4.19.19.tar.gz (161 MB)
HEAD is now at 23f4210 Increase CONFIG_DEBUG_KMEMLEAK_EARLY_LOG_SIZE to 16000 (#2)