$ git clone -n https://src.fedoraproject.org/rpms/rust-uu_shred.git /var/lib/mock/f40-build-1971927-25224/root/chroot_tmpdir/scmroot/rust-uu_shred
Cloning into '/var/lib/mock/f40-build-1971927-25224/root/chroot_tmpdir/scmroot/rust-uu_shred'...
$ git fetch origin e507ad96fe5a7a73d4e77b48bde5d04214fc1e55:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-uu_shred
 * [new ref]         e507ad96fe5a7a73d4e77b48bde5d04214fc1e55 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e507ad9 Update to version 0.0.27; Fixes: RHBZ#2260240