$ git clone -n https://src.fedoraproject.org/rpms/bwbar.git /var/lib/mock/f39-build-1489725-34501/root/chroot_tmpdir/scmroot/bwbar
Cloning into '/var/lib/mock/f39-build-1489725-34501/root/chroot_tmpdir/scmroot/bwbar'...
$ git fetch origin dbc8fa65624af5642b7cf8173160de0db9e71a9e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bwbar
 * [new ref]         dbc8fa65624af5642b7cf8173160de0db9e71a9e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dbc8fa6 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild