$ git clone -n https://src.fedoraproject.org/rpms/golang-github-appc-goaci.git /var/lib/mock/f38-build-side-42-init-devel-731316-27448/root/chroot_tmpdir/scmroot/golang-github-appc-goaci
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-731316-27448/root/chroot_tmpdir/scmroot/golang-github-appc-goaci'...
$ git fetch origin 30c99336a20ea876714d25b33595926b91e2af75:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-appc-goaci
 * [new ref]         30c99336a20ea876714d25b33595926b91e2af75 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 30c9933 Rebuild to fix FTBFS