$ git clone -n https://src.fedoraproject.org/rpms/rust-spin.git /var/lib/mock/f38-build-side-42-init-devel-1394130-31050/root/chroot_tmpdir/scmroot/rust-spin
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1394130-31050/root/chroot_tmpdir/scmroot/rust-spin'...
$ git fetch origin ced24ab348fd6f243dc920761554483cd1435a59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-spin
 * [new ref]         ced24ab348fd6f243dc920761554483cd1435a59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ced24ab Update to version 0.9.8; Fixes RHBZ#2183956