$ git clone -n https://src.fedoraproject.org/rpms/gazebo.git /var/lib/mock/f38-build-722061-98701/root/chroot_tmpdir/scmroot/gazebo
Cloning into '/var/lib/mock/f38-build-722061-98701/root/chroot_tmpdir/scmroot/gazebo'...
$ git fetch origin 20d141858077045f44ddd4e72eea32185d85f948:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gazebo
 * [new ref]         20d141858077045f44ddd4e72eea32185d85f948 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 20d1418 Fix qwt-6.2 build