$ git clone -n https://src.fedoraproject.org/rpms/R-RPostgres.git /var/lib/mock/f33-build-510909-64506/root/chroot_tmpdir/scmroot/R-RPostgres
Cloning into '/var/lib/mock/f33-build-510909-64506/root/chroot_tmpdir/scmroot/R-RPostgres'...
$ git reset --hard 7f87b67fdc312cd8d009d3a469967c6866aba6e3
HEAD is now at 7f87b67 Update to latest version.