$ git clone -n https://src.fedoraproject.org/rpms/nut.git /var/lib/mock/f41-build-59198199-6571621/root/chroot_tmpdir/scmroot/nut
Cloning into '/var/lib/mock/f41-build-59198199-6571621/root/chroot_tmpdir/scmroot/nut'...
$ git fetch origin 9867e182417607deb337c2112a8f1c45f4e33179:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nut
 * [new ref]         9867e182417607deb337c2112a8f1c45f4e33179 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9867e18 add needed buildrequire jq