$ git clone -n https://src.fedoraproject.org/rpms/perl-XML-DOM.git /var/lib/mock/f45-build-27475-624/root/chroot_tmpdir/scmroot/perl-XML-DOM
Cloning into '/var/lib/mock/f45-build-27475-624/root/chroot_tmpdir/scmroot/perl-XML-DOM'...
$ git fetch origin 44b6c3c10f63b3a54abdb0c86191f193aa660f04:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-XML-DOM
 * [new ref]         44b6c3c10f63b3a54abdb0c86191f193aa660f04 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 44b6c3c Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild