$ git clone -n https://src.fedoraproject.org/rpms/R-gmp.git /var/lib/mock/f33-build-129803-40758/root/chroot_tmpdir/scmroot/R-gmp
Cloning into '/var/lib/mock/f33-build-129803-40758/root/chroot_tmpdir/scmroot/R-gmp'...
$ git reset --hard d21c27442108bf9c402a178ee2f81b1e8517d5b7
HEAD is now at d21c274 Merge branch 'f30'