$ git clone -n https://src.fedoraproject.org/rpms/perl-Gtk2-Ex-PodViewer.git /var/lib/mock/f45-build-23834-599/root/chroot_tmpdir/scmroot/perl-Gtk2-Ex-PodViewer
Cloning into '/var/lib/mock/f45-build-23834-599/root/chroot_tmpdir/scmroot/perl-Gtk2-Ex-PodViewer'...
$ git fetch origin f692ebdaaffdb3de23719682087ef379d157b6eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Gtk2-Ex-PodViewer
 * [new ref]         f692ebdaaffdb3de23719682087ef379d157b6eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f692ebd Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild