$ git clone -n https://src.fedoraproject.org/rpms/puppet.git /var/lib/mock/f40-build-2213366-52325/root/chroot_tmpdir/scmroot/puppet
Cloning into '/var/lib/mock/f40-build-2213366-52325/root/chroot_tmpdir/scmroot/puppet'...
$ git fetch origin 59974bc91394c390b11c442630cc158ba9edaadb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/puppet
 * [new ref]         59974bc91394c390b11c442630cc158ba9edaadb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 59974bc Update command in comment for correct sources