$ git clone -n https://src.fedoraproject.org/rpms/golang-sigs-k8s-aws-iam-authenticator.git /var/lib/mock/f42-build-867050-174622/root/chroot_tmpdir/scmroot/golang-sigs-k8s-aws-iam-authenticator
Cloning into '/var/lib/mock/f42-build-867050-174622/root/chroot_tmpdir/scmroot/golang-sigs-k8s-aws-iam-authenticator'...
$ git fetch origin 4b9f178347d234c5bf98b6817ee1be8839dcf9aa:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-sigs-k8s-aws-iam-authenticator
 * [new ref]         4b9f178347d234c5bf98b6817ee1be8839dcf9aa -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b9f178 Fix FTBFS - Closes rhbz#2261203 rhbz#2300814