$ git clone -n https://src.fedoraproject.org/rpms/golang-github-hairyhenderson-codeowners.git /var/lib/mock/f40-build-2218502-52601/root/chroot_tmpdir/scmroot/golang-github-hairyhenderson-codeowners
Cloning into '/var/lib/mock/f40-build-2218502-52601/root/chroot_tmpdir/scmroot/golang-github-hairyhenderson-codeowners'...
$ git fetch origin 0fd89e9890c620600aa070b971fa0373866791c2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-hairyhenderson-codeowners
 * [new ref]         0fd89e9890c620600aa070b971fa0373866791c2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0fd89e9 Update to 0.4.0