$ git clone -n https://src.fedoraproject.org/rpms/iftop.git /var/lib/mock/f41-build-785934-13590/root/chroot_tmpdir/scmroot/iftop
Cloning into '/var/lib/mock/f41-build-785934-13590/root/chroot_tmpdir/scmroot/iftop'...
$ git fetch origin cd7fdfb0789da80c01ae84e15bf88e43c978217d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/iftop
 * [new ref]         cd7fdfb0789da80c01ae84e15bf88e43c978217d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cd7fdfb Eliminate use of obsolete %patchN syntax (#2283636)