$ git clone -n https://src.fedoraproject.org/rpms/golang-github-openapi-runtime.git /var/lib/mock/f41-build-1036205-18712/root/chroot_tmpdir/scmroot/golang-github-openapi-runtime
Cloning into '/var/lib/mock/f41-build-1036205-18712/root/chroot_tmpdir/scmroot/golang-github-openapi-runtime'...
$ git fetch origin ff9bc7ee32839f659a656a03d79a5e483e00f465:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-openapi-runtime
 * [new ref]         ff9bc7ee32839f659a656a03d79a5e483e00f465 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ff9bc7e Fix FTBFS