$ git clone -n https://src.fedoraproject.org/rpms/librttopo.git /var/lib/mock/f40-build-2211081-52199/root/chroot_tmpdir/scmroot/librttopo
Cloning into '/var/lib/mock/f40-build-2211081-52199/root/chroot_tmpdir/scmroot/librttopo'...
$ git fetch origin d0d023034d24e7bb58428a4511088c1062181005:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/librttopo
 * [new ref]         d0d023034d24e7bb58428a4511088c1062181005 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d0d0230 Fix flatpak build