$ git clone -n https://src.fedoraproject.org/rpms/google-guest-agent.git /var/lib/mock/f40-build-2263179-54524/root/chroot_tmpdir/scmroot/google-guest-agent
Cloning into '/var/lib/mock/f40-build-2263179-54524/root/chroot_tmpdir/scmroot/google-guest-agent'...
$ git fetch origin bbdfe4d1a6ac8f960475b27509a02dd4e2a94ae5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/google-guest-agent
 * [new ref]         bbdfe4d1a6ac8f960475b27509a02dd4e2a94ae5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bbdfe4d PRs to rawhide only