$ git clone -n https://src.fedoraproject.org/rpms/python-referencing.git /var/lib/mock/f45-build-32616-661/root/chroot_tmpdir/scmroot/python-referencing
Cloning into '/var/lib/mock/f45-build-32616-661/root/chroot_tmpdir/scmroot/python-referencing'...
$ git fetch origin 1ffa7ecc4a2c65987075b12eb477df5cfef58ed7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-referencing
 * [new ref]         1ffa7ecc4a2c65987075b12eb477df5cfef58ed7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1ffa7ec Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild