$ git clone -n https://src.fedoraproject.org/rpms/rust-spki.git /var/lib/mock/f45-build-45128-821/root/chroot_tmpdir/scmroot/rust-spki
Cloning into '/var/lib/mock/f45-build-45128-821/root/chroot_tmpdir/scmroot/rust-spki'...
$ git fetch origin 231450b580793e0a1da1c6b83bf2d678197b76fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-spki
 * [new ref]         231450b580793e0a1da1c6b83bf2d678197b76fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 231450b Update to version 0.8.0; Fixes RHBZ#2455089