$ git clone -n https://src.fedoraproject.org/rpms/rust-suggest.git /var/lib/mock/f40-build-2717003-72717/root/chroot_tmpdir/scmroot/rust-suggest
Cloning into '/var/lib/mock/f40-build-2717003-72717/root/chroot_tmpdir/scmroot/rust-suggest'...
$ git fetch origin dee566cee63905fabcdc315188e09ffa1a0cbbc1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-suggest
 * [new ref]         dee566cee63905fabcdc315188e09ffa1a0cbbc1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dee566c Update to version 0.5.1; Fixes RHBZ#2264149