$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-NamespaceSupport.git /var/lib/mock/f45-build-27526-624/root/chroot_tmpdir/scmroot/perl-XML-NamespaceSupport
Cloning into '/var/lib/mock/f45-build-27526-624/root/chroot_tmpdir/scmroot/perl-XML-NamespaceSupport'...
$ git fetch origin a3ffb4e4c7d01bbd62431904623d25d584822834:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-NamespaceSupport
 * [new ref]         a3ffb4e4c7d01bbd62431904623d25d584822834 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a3ffb4e Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild