$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-XML.git /var/lib/mock/f45-build-26966-620/root/chroot_tmpdir/scmroot/perl-Test-XML
Cloning into '/var/lib/mock/f45-build-26966-620/root/chroot_tmpdir/scmroot/perl-Test-XML'...
$ git fetch origin 42fce45c23770466020e0eaa5729471dd26ce228:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-XML
 * [new ref]         42fce45c23770466020e0eaa5729471dd26ce228 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 42fce45 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild