$ git clone -n https://src.fedoraproject.org/rpms/nasm.git /var/lib/mock/f40-build-2012431-45788/root/chroot_tmpdir/scmroot/nasm
Cloning into '/var/lib/mock/f40-build-2012431-45788/root/chroot_tmpdir/scmroot/nasm'...
$ git fetch origin f81b06d18e3261c76c4dc70b6495a085b358b2a7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nasm
 * [new ref]         f81b06d18e3261c76c4dc70b6495a085b358b2a7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f81b06d Spec File: Migrated to SPDX license. Resolves: #2222114