$ git clone -n https://src.fedoraproject.org/rpms/perl-Gtk2-Ex-PodViewer.git /var/lib/mock/f41-build-1153771-21307/root/chroot_tmpdir/scmroot/perl-Gtk2-Ex-PodViewer
Cloning into '/var/lib/mock/f41-build-1153771-21307/root/chroot_tmpdir/scmroot/perl-Gtk2-Ex-PodViewer'...
$ git fetch origin 83cb4ef51849a08d8b455a6a317bae01de20a3be:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Gtk2-Ex-PodViewer
 * [new ref]         83cb4ef51849a08d8b455a6a317bae01de20a3be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 83cb4ef Eliminate use of obsolete %patchN syntax (#2283636)