$ git clone -n https://src.fedoraproject.org/rpms/plasma-vault.git /var/lib/mock/f40-build-2180556-51174/root/chroot_tmpdir/scmroot/plasma-vault
Cloning into '/var/lib/mock/f40-build-2180556-51174/root/chroot_tmpdir/scmroot/plasma-vault'...
$ git fetch origin ddea50d14e729e430e85e03910c52a84d14ad7e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plasma-vault
 * [new ref]         ddea50d14e729e430e85e03910c52a84d14ad7e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ddea50d 5.91.0