$ git clone -n https://src.fedoraproject.org/rpms/plasma-vault.git /var/lib/mock/f38-build-side-42-init-devel-601220-26175/root/chroot_tmpdir/scmroot/plasma-vault
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-601220-26175/root/chroot_tmpdir/scmroot/plasma-vault'...
$ git fetch origin fa3378b023cd4f205eee85eec3b5c98d4f97629c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-vault
 * [new ref]         fa3378b023cd4f205eee85eec3b5c98d4f97629c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fa3378b 5.27.4