$ git clone -n https://src.fedoraproject.org/rpms/python-walkdir.git /var/lib/mock/f45-build-33614-671/root/chroot_tmpdir/scmroot/python-walkdir
Cloning into '/var/lib/mock/f45-build-33614-671/root/chroot_tmpdir/scmroot/python-walkdir'...
$ git fetch origin 4a85bf63b1ab6d6c7a38c5bd80cf25d08bf7027a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-walkdir
 * [new ref]         4a85bf63b1ab6d6c7a38c5bd80cf25d08bf7027a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a85bf6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild