$ git clone -n https://src.fedoraproject.org/rpms/rust-ssh-key-dir.git /var/lib/mock/f40-build-2163835-50966/root/chroot_tmpdir/scmroot/rust-ssh-key-dir
Cloning into '/var/lib/mock/f40-build-2163835-50966/root/chroot_tmpdir/scmroot/rust-ssh-key-dir'...
$ git fetch origin 219b029bc003605d85e961d015e8bcc6c551db56:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ssh-key-dir
 * [new ref]         219b029bc003605d85e961d015e8bcc6c551db56 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 219b029 Use vendored dependencies in ELN builds