$ git clone -n https://src.fedoraproject.org/rpms/gitit.git /var/lib/mock/f38-build-side-42-init-devel-1258827-30642/root/chroot_tmpdir/scmroot/gitit
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1258827-30642/root/chroot_tmpdir/scmroot/gitit'...
$ git fetch origin 24f025757b3bbbf2b17b9491b550bf1df827126b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gitit
 * [new ref]         24f025757b3bbbf2b17b9491b550bf1df827126b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 24f0257 patch to current git head to allow building with lts-20