$ git clone -n https://src.fedoraproject.org/rpms/plasma-vault.git /var/lib/mock/f39-build-1505646-35156/root/chroot_tmpdir/scmroot/plasma-vault
Cloning into '/var/lib/mock/f39-build-1505646-35156/root/chroot_tmpdir/scmroot/plasma-vault'...
$ git fetch origin fb768687b73bf07bbf30084e8e62ae8352416019:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-vault
 * [new ref]         fb768687b73bf07bbf30084e8e62ae8352416019 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fb76868 Update to 5.27.8