$ git clone -n https://src.fedoraproject.org/rpms/perl-constant.git /var/lib/mock/f43-perl-60945678-6586577/root/chroot_tmpdir/scmroot/perl-constant
Cloning into '/var/lib/mock/f43-perl-60945678-6586577/root/chroot_tmpdir/scmroot/perl-constant'...
$ git fetch origin 9a414918b42e46dd3bb7ba3349b326a9790fa85c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-constant
 * [new ref]         9a414918b42e46dd3bb7ba3349b326a9790fa85c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9a41491 Increase release to favour standalone package