$ git clone -n https://src.fedoraproject.org/rpms/golang-cloud-google-kms.git /var/lib/mock/f40-build-2213996-52345/root/chroot_tmpdir/scmroot/golang-cloud-google-kms
Cloning into '/var/lib/mock/f40-build-2213996-52345/root/chroot_tmpdir/scmroot/golang-cloud-google-kms'...
$ git fetch origin 70a0c760261ee389c70b9c4dfeb3fa30f27709ca:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-cloud-google-kms
 * [new ref]         70a0c760261ee389c70b9c4dfeb3fa30f27709ca -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 70a0c76 Disable bootstrap mode