$ git clone -n https://src.fedoraproject.org/rpms/flint.git /var/lib/mock/f45-build-9061-398/root/chroot_tmpdir/scmroot/flint
Cloning into '/var/lib/mock/f45-build-9061-398/root/chroot_tmpdir/scmroot/flint'...
$ git fetch origin 53cbee658ee0ee2981563ba429519f7004f6750c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flint
 * [new ref]         53cbee658ee0ee2981563ba429519f7004f6750c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 53cbee6 BR m4 on aarch64