$ git clone -n https://src.fedoraproject.org/rpms/knot-resolver.git /var/lib/mock/f40-build-2448437-61411/root/chroot_tmpdir/scmroot/knot-resolver
Cloning into '/var/lib/mock/f40-build-2448437-61411/root/chroot_tmpdir/scmroot/knot-resolver'...
$ git fetch origin 320268ff267978198b587a6e4471a0a57cc5c1dc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/knot-resolver
 * [new ref]         320268ff267978198b587a6e4471a0a57cc5c1dc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 320268f Release 5.7.1-1