$ git clone -n https://src.fedoraproject.org/rpms/golang-github-openapi-spec.git /var/lib/mock/f41-build-1036210-18712/root/chroot_tmpdir/scmroot/golang-github-openapi-spec
Cloning into '/var/lib/mock/f41-build-1036210-18712/root/chroot_tmpdir/scmroot/golang-github-openapi-spec'...
$ git fetch origin bbe9cd23c5f68e54b3cc760b4bce4845bef75a2f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-openapi-spec
 * [new ref]         bbe9cd23c5f68e54b3cc760b4bce4845bef75a2f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bbe9cd2 Fix FTBFS