$ git clone -n https://src.fedoraproject.org/rpms/rapidxml.git /var/lib/mock/f45-build-34323-684/root/chroot_tmpdir/scmroot/rapidxml
Cloning into '/var/lib/mock/f45-build-34323-684/root/chroot_tmpdir/scmroot/rapidxml'...
$ git fetch origin add1e2061231fdb595a1699f26f5476b5848f7cd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rapidxml
 * [new ref]         add1e2061231fdb595a1699f26f5476b5848f7cd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at add1e20 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild