$ git clone -n https://src.fedoraproject.org/rpms/graphviz.git /var/lib/mock/f38-build-side-42-init-devel-676766-26691/root/chroot_tmpdir/scmroot/graphviz
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-676766-26691/root/chroot_tmpdir/scmroot/graphviz'...
$ git fetch origin 7513cdf24843536b5723f29172c541ff6e048f96:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/graphviz
 * [new ref]         7513cdf24843536b5723f29172c541ff6e048f96 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7513cdf Disabled bootstrap