$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-FeedPP.git /var/lib/mock/f45-build-27479-624/root/chroot_tmpdir/scmroot/perl-XML-FeedPP
Cloning into '/var/lib/mock/f45-build-27479-624/root/chroot_tmpdir/scmroot/perl-XML-FeedPP'...
$ git fetch origin fb6a7121cddb58d51ef5ff386601539c7c340f92:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-FeedPP
 * [new ref]         fb6a7121cddb58d51ef5ff386601539c7c340f92 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb6a712 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild