$ git clone -n https://src.fedoraproject.org/rpms/netcat.git /var/lib/mock/f40-build-2012625-45803/root/chroot_tmpdir/scmroot/netcat
Cloning into '/var/lib/mock/f40-build-2012625-45803/root/chroot_tmpdir/scmroot/netcat'...
$ git fetch origin 66ecafb69d22eecc811a7e359f6950c28653664a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/netcat
 * [new ref]         66ecafb69d22eecc811a7e359f6950c28653664a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 66ecafb Upgrade to 1.226 (#2244540)