$ git clone -n https://src.fedoraproject.org/rpms/plasma-vault.git /var/lib/mock/f41-build-860578-169005/root/chroot_tmpdir/scmroot/plasma-vault
Cloning into '/var/lib/mock/f41-build-860578-169005/root/chroot_tmpdir/scmroot/plasma-vault'...
$ git fetch origin b25e8e1163e572350d691adf64f6c092663f6250:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-vault
 * [new ref]         b25e8e1163e572350d691adf64f6c092663f6250 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b25e8e1 6.2.2