$ git clone -n https://src.fedoraproject.org/rpms/f2fs-tools.git /var/lib/mock/f45-build-8589-391/root/chroot_tmpdir/scmroot/f2fs-tools
Cloning into '/var/lib/mock/f45-build-8589-391/root/chroot_tmpdir/scmroot/f2fs-tools'...
$ git fetch origin f7c1c45dffd0a9b60bf81e15026ad3e2fc7887be:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/f2fs-tools
 * [new ref]         f7c1c45dffd0a9b60bf81e15026ad3e2fc7887be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f7c1c45 remove unused patch