$ git clone -n https://src.fedoraproject.org/rpms/systemd-bootchart.git /var/lib/mock/f38-build-side-42-init-devel-1313313-30688/root/chroot_tmpdir/scmroot/systemd-bootchart
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1313313-30688/root/chroot_tmpdir/scmroot/systemd-bootchart'...
$ git fetch origin 82a5c0f1e81373f9cb8348b37e7b003f36a827cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/systemd-bootchart
 * [new ref]         82a5c0f1e81373f9cb8348b37e7b003f36a827cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 82a5c0f Update to v234 to fix segfault in svg_ps_bars