$ git clone -n https://src.fedoraproject.org/rpms/helvum.git /var/lib/mock/f41-build-856628-167713/root/chroot_tmpdir/scmroot/helvum
Cloning into '/var/lib/mock/f41-build-856628-167713/root/chroot_tmpdir/scmroot/helvum'...
$ git fetch origin 004bb91f032b6f82cfc042a337f75f516f5b754e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/helvum
 * [new ref]         004bb91f032b6f82cfc042a337f75f516f5b754e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 004bb91 Regenerate with rust2rpm v26