$ git clone -n https://src.fedoraproject.org/rpms/golang-github-tklauser-numcpus.git /var/lib/mock/f39-build-2265401-54585/root/chroot_tmpdir/scmroot/golang-github-tklauser-numcpus
Cloning into '/var/lib/mock/f39-build-2265401-54585/root/chroot_tmpdir/scmroot/golang-github-tklauser-numcpus'...
$ git fetch origin 8b2b08ac5c1eb9f50c53cf0e912f427b5e1b4811:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-tklauser-numcpus
 * [new ref]         8b2b08ac5c1eb9f50c53cf0e912f427b5e1b4811 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8b2b08a Update to 0.7.0