$ git clone -n https://src.fedoraproject.org/rpms/R-expm.git /var/lib/mock/f33-build-129520-40706/root/chroot_tmpdir/scmroot/R-expm
Cloning into '/var/lib/mock/f33-build-129520-40706/root/chroot_tmpdir/scmroot/R-expm'...
$ git reset --hard 48b1c797d83162c486cb62e25a33c59f78157891
HEAD is now at 48b1c79 rebuild for R without libRlapack.so