$ git clone -n https://src.fedoraproject.org/rpms/R-RPostgres.git /var/lib/mock/f38-build-725348-99605/root/chroot_tmpdir/scmroot/R-RPostgres
Cloning into '/var/lib/mock/f38-build-725348-99605/root/chroot_tmpdir/scmroot/R-RPostgres'...
$ git reset --hard 60c5c991c5cf9cff27f819ef784296f815816ec6
HEAD is now at 60c5c99 Ignore vignettes