$ git clone -n https://src.fedoraproject.org/rpms/rust-thread-id.git /var/lib/mock/f38-build-side-42-init-devel-1395936-31050/root/chroot_tmpdir/scmroot/rust-thread-id
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1395936-31050/root/chroot_tmpdir/scmroot/rust-thread-id'...
$ git fetch origin e86be79dabc1ee30ea82c194e9c7a905dc90b170:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-thread-id
 * [new ref]         e86be79dabc1ee30ea82c194e9c7a905dc90b170 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e86be79 Update to version 4.2.0; Fixes RHBZ#2232921