$ git clone -n https://src.fedoraproject.org/rpms/python-sieve.git /var/lib/mock/f45-build-32928-665/root/chroot_tmpdir/scmroot/python-sieve
Cloning into '/var/lib/mock/f45-build-32928-665/root/chroot_tmpdir/scmroot/python-sieve'...
$ git fetch origin c096ea6862ef899c4d3f775ce83d0562c6436801:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-sieve
 * [new ref]         c096ea6862ef899c4d3f775ce83d0562c6436801 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c096ea6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild