$ git clone -n https://src.fedoraproject.org/rpms/perl-Nagios-Plugin-WWW-Mechanize.git /var/lib/mock/f45-build-25217-610/root/chroot_tmpdir/scmroot/perl-Nagios-Plugin-WWW-Mechanize
Cloning into '/var/lib/mock/f45-build-25217-610/root/chroot_tmpdir/scmroot/perl-Nagios-Plugin-WWW-Mechanize'...
$ git fetch origin bf4783947613c6370730ff859237918ed05373bf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Nagios-Plugin-WWW-Mechanize
 * [new ref]         bf4783947613c6370730ff859237918ed05373bf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bf47839 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild