$ git clone -n https://src.fedoraproject.org/rpms/rust-libspa.git /var/lib/mock/f40-build-2681684-67961/root/chroot_tmpdir/scmroot/rust-libspa
Cloning into '/var/lib/mock/f40-build-2681684-67961/root/chroot_tmpdir/scmroot/rust-libspa'...
$ git fetch origin 4069861017777bdd43a496c03a92beae9081bd1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-libspa
 * [new ref]         4069861017777bdd43a496c03a92beae9081bd1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4069861 Update to version 0.8.0; Fixes RHBZ#2232523