$ git clone -n https://src.fedoraproject.org/rpms/reaver.git /var/lib/mock/f45-build-34394-685/root/chroot_tmpdir/scmroot/reaver
Cloning into '/var/lib/mock/f45-build-34394-685/root/chroot_tmpdir/scmroot/reaver'...
$ git fetch origin 4239cbcddbcb5ba814bd6b198d874b4229168b93:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/reaver
 * [new ref]         4239cbcddbcb5ba814bd6b198d874b4229168b93 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4239cbc Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild