$ git clone -n https://src.fedoraproject.org/rpms/rust-desed.git /var/lib/mock/f38-build-722504-98815/root/chroot_tmpdir/scmroot/rust-desed
Cloning into '/var/lib/mock/f38-build-722504-98815/root/chroot_tmpdir/scmroot/rust-desed'...
$ git fetch origin 16280197b8d0ecd26d75521f8e6aafbd498fa005:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-desed
 * [new ref]         16280197b8d0ecd26d75521f8e6aafbd498fa005 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1628019 Update to 1.2.1 (rhbz#2134932)