$ git clone -n https://src.fedoraproject.org/rpms/xorsearch.git /var/lib/mock/f45-build-39032-731/root/chroot_tmpdir/scmroot/xorsearch
Cloning into '/var/lib/mock/f45-build-39032-731/root/chroot_tmpdir/scmroot/xorsearch'...
$ git fetch origin f1d9e807fbf2990645c20025175854e95979b7c0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xorsearch
 * [new ref]         f1d9e807fbf2990645c20025175854e95979b7c0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f1d9e80 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild