$ git clone -n https://git.cclinux.org/stage/rpms/kernel-rt.git /var/lib/mock/dist-circle8-build-40973-7812/root/chroot_tmpdir/scmroot/kernel-rt
Cloning into '/var/lib/mock/dist-circle8-build-40973-7812/root/chroot_tmpdir/scmroot/kernel-rt'...
$ git reset --hard 5e42f05234c9a24cc57e49f9e046d51f816fd511
HEAD is now at 5e42f05 import kernel-rt-4.18.0-305.19.1.rt7.91.el8_4