$ git clone -n https://src.fedoraproject.org/rpms/R-kernlab.git /var/lib/mock/f37-build-641614-71972/root/chroot_tmpdir/scmroot/R-kernlab
Cloning into '/var/lib/mock/f37-build-641614-71972/root/chroot_tmpdir/scmroot/R-kernlab'...
$ git reset --hard e63c9698930e7434b9184313b792d6420e122ce9
HEAD is now at e63c969 R 4.2.1