$ git clone -n https://src.fedoraproject.org/rpms/perl-Gtk2-Notify.git /var/lib/mock/f41-build-816703-150356/root/chroot_tmpdir/scmroot/perl-Gtk2-Notify
Cloning into '/var/lib/mock/f41-build-816703-150356/root/chroot_tmpdir/scmroot/perl-Gtk2-Notify'...
$ git fetch origin cf1f3624436e27eb8e9c2f9966560b140aec0069:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Gtk2-Notify
 * [new ref]         cf1f3624436e27eb8e9c2f9966560b140aec0069 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf1f362 Perl 5.40 rebuild