$ git clone -n https://src.fedoraproject.org/rpms/python-k5test.git /var/lib/mock/f45-build-31239-651/root/chroot_tmpdir/scmroot/python-k5test
Cloning into '/var/lib/mock/f45-build-31239-651/root/chroot_tmpdir/scmroot/python-k5test'...
$ git fetch origin def1c2bb39439ad1183cdee11546eac66e415951:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-k5test
 * [new ref]         def1c2bb39439ad1183cdee11546eac66e415951 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at def1c2b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild