$ git clone -n https://github.com/xcp-ng-rpms/kernel.git /var/lib/mock/v8.3-incoming-5371-8053/root/chroot_tmpdir/scmroot/kernel
Cloning into '/var/lib/mock/v8.3-incoming-5371-8053/root/chroot_tmpdir/scmroot/kernel'...
$ git reset --hard 5c2d237eedb9def9ec226e4fac82afcf80a97614
Downloading SOURCES/kernel-4.19.19.tar.gz (161 MB)
HEAD is now at 5c2d237 Merge branch 'XS-8.3'