$ git clone -n https://src.fedoraproject.org/rpms/plymouth-kcm.git /var/lib/mock/f40-build-2406637-60558/root/chroot_tmpdir/scmroot/plymouth-kcm
Cloning into '/var/lib/mock/f40-build-2406637-60558/root/chroot_tmpdir/scmroot/plymouth-kcm'...
$ git fetch origin bf1eda0b6ea8e3c4c7fa714a8b99628e8d8e320d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/plymouth-kcm
 * [new ref]         bf1eda0b6ea8e3c4c7fa714a8b99628e8d8e320d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bf1eda0 5.93.0