$ git clone -n https://src.fedoraproject.org/rpms/rust-pep440_rs.git /var/lib/mock/f38-build-side-42-init-devel-1146017-30457/root/chroot_tmpdir/scmroot/rust-pep440_rs
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-1146017-30457/root/chroot_tmpdir/scmroot/rust-pep440_rs'...
$ git fetch origin d090f83db59e29a027c3a7a350b24fdeb5c2278b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pep440_rs
 * [new ref]         d090f83db59e29a027c3a7a350b24fdeb5c2278b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d090f83 Update to version 0.3.11; Fixes RHBZ#2214525