$ git clone -n https://src.fedoraproject.org/rpms/owfs.git /var/lib/mock/f42-build-3450034-45479/root/chroot_tmpdir/scmroot/owfs
Cloning into '/var/lib/mock/f42-build-3450034-45479/root/chroot_tmpdir/scmroot/owfs'...
$ git fetch origin deaa136e78bbf5b43121e915c3a82ecbd27283ca:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/owfs
 * [new ref]         deaa136e78bbf5b43121e915c3a82ecbd27283ca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at deaa136 adjust to TCL8 compat packages (rhbz#2340991, rhbz#2337745)