$ git clone -n https://src.fedoraproject.org/rpms/rust-pep440_rs.git /var/lib/mock/f39-build-2206139-52040/root/chroot_tmpdir/scmroot/rust-pep440_rs
Cloning into '/var/lib/mock/f39-build-2206139-52040/root/chroot_tmpdir/scmroot/rust-pep440_rs'...
$ git fetch origin 949194d6752eba5f9c16563ac0d332342326c4da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pep440_rs
 * [new ref]         949194d6752eba5f9c16563ac0d332342326c4da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 949194d Update to version 0.4.0; Fixes RHBZ#2253956