$ git clone -n https://src.fedoraproject.org/rpms/perl-Gtk2-ImageView.git /var/lib/mock/f45-build-23840-599/root/chroot_tmpdir/scmroot/perl-Gtk2-ImageView
Cloning into '/var/lib/mock/f45-build-23840-599/root/chroot_tmpdir/scmroot/perl-Gtk2-ImageView'...
$ git fetch origin 379896fe6ca47ba889aefcebdef4770dc5edc7fc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Gtk2-ImageView
 * [new ref]         379896fe6ca47ba889aefcebdef4770dc5edc7fc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 379896f Perl 5.44 rebuild