$ git clone -n https://src.fedoraproject.org/rpms/R-FMStable.git /var/lib/mock/f38-build-721324-98511/root/chroot_tmpdir/scmroot/R-FMStable
Cloning into '/var/lib/mock/f38-build-721324-98511/root/chroot_tmpdir/scmroot/R-FMStable'...
$ git reset --hard e5f66aacf1f98bc7ce02a0a07173d273d253f465
HEAD is now at e5f66aa R-maint-sig mass rebuild