$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-LibXML-Simple.git /var/lib/mock/f45-build-27525-624/root/chroot_tmpdir/scmroot/perl-XML-LibXML-Simple
Cloning into '/var/lib/mock/f45-build-27525-624/root/chroot_tmpdir/scmroot/perl-XML-LibXML-Simple'...
$ git fetch origin e3545afb4c0377dd754bee87a409a325a656338f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-LibXML-Simple
 * [new ref]         e3545afb4c0377dd754bee87a409a325a656338f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e3545af Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild