$ git clone -n https://src.fedoraproject.org/rpms/fastnetmon.git /var/lib/mock/f40-build-2226388-52922/root/chroot_tmpdir/scmroot/fastnetmon
Cloning into '/var/lib/mock/f40-build-2226388-52922/root/chroot_tmpdir/scmroot/fastnetmon'...
$ git fetch origin 00737e224c4a11f411098eba6ba6cab13a084718:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fastnetmon
 * [new ref]         00737e224c4a11f411098eba6ba6cab13a084718 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00737e2 Bump the release number to keep F40 from downgrading F39